Every time I load unreal and attempt ti import a .hda, it gives the error “Houdini installation was not detected. Failed to locate or load libHAPIL.dll. No cooking/instantiation will take place”. When I go to the plugin settings in Unreal, it has the correct file path to the bin, and I can manually locate the file in the bin, but UE4 reports that no valid license was found. In hkey, I have a Houdini Indie license, a Houdini Engine license, and a Mantra license. I have already reinstalled the plugin to Unreal to avail. I also found a recent forum post that suggested turning on the “Start automatic server” option, and this also did not fix the issue.
Thanks for the help!
Can't find libHAPIL.dll in UE4
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- HighFive
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- HighFive
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Planning on leaving this here for anyone who has this problem in the future. I fixed it (though I am not sure how). The things that I changed were pointing the Houdini location setting (in UE4) to a custom location (even though it was in the default location). The Session settings are exactly as they appear in the attachment above still (Available under Project Settings>Plugins>Houdini Engine), but I went into Hkey and made sure I had the licenses. For some reason, I had three copies of the Mantra license on my single computer, so I turned those back in and also turned in/re-checked out the Houdini Indie and the Houdini Engine Indie licenses that I already had redeemed. Finally, I went into the Services application (a Windows default) and restarted both of the current running Houdini services.
An important thing to note: as far as I can tell, the Houdini Engine settings in UE4 do not update until you try and create an instance of a Houdini Asset in the level. Until you do this, the Acquired License Type will always read “No License Acquired”. To test your license, always try and load an asset instead of simply reading the settings (there is no telling how much trouble this caused me, but probably a lot).
An important thing to note: as far as I can tell, the Houdini Engine settings in UE4 do not update until you try and create an instance of a Houdini Asset in the level. Until you do this, the Acquired License Type will always read “No License Acquired”. To test your license, always try and load an asset instead of simply reading the settings (there is no telling how much trouble this caused me, but probably a lot).
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- rudeypunk
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Greetings!
Whatever you did HighFive in order to get your Houdini Engine working must have been voodoo because I've been getting this problem working with UE4.20.3 and Houdini 17.0.352 and I can't seem to get rid of it! I am attempting this on a windows10 machine.
Inside the Houdini location setting (in UE4) I:
I did notice that Houdini engine was not able to start during initial UE4 start-up. I verified this by examining the Output Log:
I also notice that I'll occasionally get a “Hapi failed:” group of error when trying to add a digital asset:
Any Help I can get with this would be great! I am giving a class on Houdini Engine/UE4 integration next week and want to get this ironed out before presenting the material!
Thanks for the help!
Whatever you did HighFive in order to get your Houdini Engine working must have been voodoo because I've been getting this problem working with UE4.20.3 and Houdini 17.0.352 and I can't seem to get rid of it! I am attempting this on a windows10 machine.
Inside the Houdini location setting (in UE4) I:
- checked the custom location box and changed it to the location of my current Houdini installation, 17.0.352
- Changed the session type to “Named pipe or domain socket”
- Set the Server Pipe Name to Hapi
- Made sure the Start Automatic Server box was checked
- Restarted UE4 after making any changes
I did notice that Houdini engine was not able to start during initial UE4 start-up. I verified this by examining the Output Log:
SourceControl: Source control is disabled
SourceControl: Source control is disabled
LogAndroidPermission: UAndroidPermissionCallbackProxy::GetInstance
LogHoudiniEngine: Starting the Houdini Engine module.
LogHoudiniEngine: Loaded libHAPIL.dll from custom path C:/Program Files/Side Effects Software/Houdini 17.0.352/bin
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_logo.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_default_material.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_bgeo_import.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogHoudiniEngine: Starting up the Houdini Engine API module failed: Generic Failure
LogOcInput: OculusInput pre-init called
LogEngine: Initializing Engine...
LogHMD: Failed to initialize OpenVR with code 101
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI prefixes - 0.000 sI also notice that I'll occasionally get a “Hapi failed:” group of error when trying to add a digital asset:
LogAssetRegistry: Asset discovery search completed in 9.9020 seconds
LogCollectionManager: Rebuilt the object cache for 0 collections in 0.000000 seconds (found 0 objects)
LogCollectionManager: Fixed up redirectors for 0 collections in 0.000072 seconds (updated 0 objects)
LogSlate: FSceneViewport::OnFocusLost() reason 0
LogSlate: Took 0.000823 seconds to synchronously load lazily loaded font '../../../Engine/Content/Slate/Fonts/Roboto-Light.ttf' (167K)
LogFactory: FactoryCreateFile: HoudiniAsset with HoudiniAssetFactory (0 0 ../../../../../../cygwin64/home/croda/houdini17.0/otls/squab_17_0.hdanc)
LogHoudiniEngineEditor: PostSpawnActor HoudiniAssetActor_0, supplied Asset = 0x000001C1C84DD590
LogActorComponent: UnregisterComponent: (/Game/ThirdPersonBP/Maps/ThirdPersonExampleMap.ThirdPersonExampleMap:PersistentLevel.squab_17_0.StaticMeshComponent_1) Not registered. Aborting.
LogHoudiniEngineEditor: PostSpawnActor HoudiniAssetActor_1, supplied Asset = 0x000001C1C84DD590
LogSlate: FSceneViewport::OnFocusLost() reason 2
LogSlate: Window 'Houdini Engine Plugin Warning' being destroyed
LogSlate: FSceneViewport::OnFocusLost() reason 0
LogSlate: Took 0.000785 seconds to synchronously load lazily loaded font '../../../Engine/Content/Slate/Fonts/DroidSansMono.ttf' (77K)
LogSlate: Only BGRA pngs, bmps or icos are supported in by External Image Picker
LogHoudiniEngine: Error: Hapi failed: Any Help I can get with this would be great! I am giving a class on Houdini Engine/UE4 integration next week and want to get this ironed out before presenting the material!
Thanks for the help!
Edited by rudeypunk - Oct. 19, 2018 16:05:26
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- dpernuit
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Hi,
rudeypunk, from your logs, the issue is definitely not caused by HE not being able to find libHAPIL.
Your project settings are fine, as LibHAPIL.dll was located correctly, the Houdini Engine session started properly, but for some reason unknown to me, HAPI (the Houdini Engine API) initialization failed…
With HAPI failing to initialize, the plugin wont be able to do anything, since it cannot talk to Houdini… hence the errors you're getting trying add an HDA to the scene.
Where you using the regular Houdini installer or the Houdini Engine one?
Could you try uninstalling Houdini, deleting the Houdini Engine folder in Unreal (Plugins/Runtime/HoudiniEngine) and then reinstalling Houdini with one of the recent 17.0 daily build?
rudeypunk, from your logs, the issue is definitely not caused by HE not being able to find libHAPIL.
Your project settings are fine, as LibHAPIL.dll was located correctly, the Houdini Engine session started properly, but for some reason unknown to me, HAPI (the Houdini Engine API) initialization failed…
With HAPI failing to initialize, the plugin wont be able to do anything, since it cannot talk to Houdini… hence the errors you're getting trying add an HDA to the scene.
Where you using the regular Houdini installer or the Houdini Engine one?
Could you try uninstalling Houdini, deleting the Houdini Engine folder in Unreal (Plugins/Runtime/HoudiniEngine) and then reinstalling Houdini with one of the recent 17.0 daily build?
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- rudeypunk
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Thanks for your prompt reply dpernuit!
I retried with the most recent daily build I could try, 17.4.51.
Startup still generated the same failure -
Once again when I tried to load in an Asset I received a similar log output:
I do have to say I have probably installed at least 4 different versions of Houdini to try and get this working:
Thanks for your time!
I retried with the most recent daily build I could try, 17.4.51.
Startup still generated the same failure -
LogAndroidPermission: UAndroidPermissionCallbackProxy::GetInstance
LogHoudiniEngine: Starting the Houdini Engine module.
LogHoudiniEngine: Loaded libHAPIL.dll from custom path C:/Program Files/Side Effects Software/Houdini 17.4.51/bin
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_logo.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_default_material.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_bgeo_import.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogHoudiniEngine: Starting up the Houdini Engine API module failed: Generic Failure
LogOcInput: OculusInput pre-init called
LogEngine: Initializing Engine...
LogHMD: Failed to initialize OpenVR with code 101
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI prefixes - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast - 0.000 s
LogInit: Initializing FReadOnlyCVARCache
LogAIModule: Creating AISystem for world Untitled
LogInit: XAudio2 using 'Speakers / Headphones (Realtek High Definition Audio)' : 2 channels at 48 kHz using 32 bits per sample (channel mask 0x3)
LogInit: FAudioDevice initialized.
LogNetVersion: Set ProjectVersion to 1.0.0.0. Version Checksum will be recalculated on next use.
LogDerivedDataCache: Saved boot cache 0.33s 71MB C:/Users/croda/AppData/Local/UnrealEngine/4.20/DerivedDataCache/Boot.ddc.
LogInit: Texture streaming: Enabled
LogEngineSessionManager: EngineSessionManager initialized
LogInit: Transaction tracking system initialized
BlueprintLog: New page: Editor Load
LocalizationService: Localization service is disabled
LogCook: Display: Max memory allowance for cook 16384mb min free memory 0mb
LogCook: Display: Mobile HDR setting 1
LogGameplayTags: Display: UGameplayTagsManager::DoneAddingNativeTags. DelegateIsBound: 0
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI prefixes - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast - 0.000 s
LogFileCache: Scanning file cache for directory 'D:/TechArt18/Students/CH15/croda/killMe/Content/' took 0.01s
LogHoudiniEngineEditor: Starting the Houdini Engine Editor module.
LogHoudiniEngineEditor: Houdini Engine Editor module startup complete.Once again when I tried to load in an Asset I received a similar log output:
LogCollectionManager: Fixed up redirectors for 0 collections in 0.000102 seconds (updated 0 objects)
LogSlate: FSceneViewport::OnFocusLost() reason 0
LogSlate: Took 0.000482 seconds to synchronously load lazily loaded font '../../../Engine/Content/Slate/Fonts/DroidSansMono.ttf' (77K)
LogSlate: Took 0.000986 seconds to synchronously load lazily loaded font '../../../Engine/Content/Slate/Fonts/Roboto-Light.ttf' (167K)
LogFactory: FactoryCreateFile: HoudiniAsset with HoudiniAssetFactory (0 0 ../../../../../../cygwin64/home/croda/houdini17.4/otls/piggy_17_5_51.hdanc)
LogSlate: Took 0.000812 seconds to synchronously load lazily loaded font '../../../Engine/Content/Slate/Fonts/Roboto-Light.ttf' (167K)
LogHoudiniEngineEditor: PostSpawnActor HoudiniAssetActor_0, supplied Asset = 0x00000191FFBD3B30
LogActorComponent: UnregisterComponent: (/Game/ThirdPersonBP/Maps/ThirdPersonExampleMap.ThirdPersonExampleMap:PersistentLevel.piggy_17_5_51.StaticMeshComponent_1) Not registered. Aborting.
LogHoudiniEngineEditor: PostSpawnActor HoudiniAssetActor_1, supplied Asset = 0x00000191FFBD3B30
LogSlate: FSceneViewport::OnFocusLost() reason 2
LogSlate: Window 'Houdini Engine Plugin Warning' being destroyed
LogSlate: FSceneViewport::OnFocusLost() reason 0I do have to say I have probably installed at least 4 different versions of Houdini to try and get this working:
- 17.4.51
- 17.4.48
- 17.0.352
- 16.5.473
Thanks for your time!
Edited by rudeypunk - Oct. 22, 2018 14:04:57
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- rudeypunk
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I just tried reinstalling a non beta version of Houdini, 17.0.380 to see what might happen and I am still cannot get Houdini engine to turn on correctly in UE4:
Here is the log results after initialization:
Thanks for your assistance!
Here is the log results after initialization:
[tt]LogAndroidPermission: UAndroidPermissionCallbackProxy::GetInstance
LogHoudiniEngine: Starting the Houdini Engine module.
LogHoudiniEngine: Loaded libHAPIL.dll from custom path C:/Program Files/Side Effects Software/Houdini 17.0.380/bin
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_logo.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_default_material.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogLinker: Warning: Asset '../../Plugins/Runtime/HoudiniEngine/Content/houdini_bgeo_import.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
LogHoudiniEngine: Starting up the Houdini Engine API module failed: Generic Failure
LogOcInput: OculusInput pre-init called
LogEngine: Initializing Engine...
LogHMD: Failed to initialize OpenVR with code 101
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI prefixes - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast - 0.000 s
LogInit: Initializing FReadOnlyCVARCache
LogAIModule: Creating AISystem for world Untitled
LogInit: XAudio2 using 'Speakers / Headphones (Realtek High Definition Audio)' : 2 channels at 48 kHz using 32 bits per sample (channel mask 0x3)
LogInit: FAudioDevice initialized.
LogNetVersion: Set ProjectVersion to 1.0.0.0. Version Checksum will be recalculated on next use.
LogDerivedDataCache: Saved boot cache 0.29s 71MB C:/Users/croda/AppData/Local/UnrealEngine/4.20/DerivedDataCache/Boot.ddc.
LogInit: Texture streaming: Enabled
LogEngineSessionManager: EngineSessionManager initialized
LogInit: Transaction tracking system initialized
BlueprintLog: New page: Editor Load
LocalizationService: Localization service is disabled
LogCook: Display: Max memory allowance for cook 16384mb min free memory 0mb
LogCook: Display: Mobile HDR setting 1
LogGameplayTags: Display: UGameplayTagsManager::DoneAddingNativeTags. DelegateIsBound: 0
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI prefixes - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: ImportINI - 0.000 s
LogStats: UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast - 0.000 s
LogFileCache: Scanning file cache for directory 'D:/TechArt18/Students/CH15/croda/hEngineTest/Content/' took 0.01s
LogHoudiniEngineEditor: Starting the Houdini Engine Editor module.
LogHoudiniEngineEditor: Houdini Engine Editor module startup complete.
SourceControl: Source control is disabled[/tt]
Thanks for your assistance!
Edited by rudeypunk - Oct. 24, 2018 11:58:14
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- dpernuit
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Hi,
I'm still not sure what exactly is causing that error, something seems to be preventing HAPI from initializing properly.
Are you using the “main” houdini installer or the houdini engine one?
Here's a few things you can try:
- Have you tried using a TCP Socket session instead of a named pipe?
(change the session type in the project settings, then restart unreal)
- If that still fails, you can try starting the Houdini Engine session directly from Houdini:
Launch Houdini, then in Windows > Houdini Engine Debugger
Start a session on that window.
Launch Unreal, and in the project setting, make sure “Start automatic server” is unchecked, and that the session settings match the one in the Houdini Engine Debugger window.
Restart Unreal.
The unreal plugin should now be connected to the opened Houdini via Houdini Engine.
If all of the above fails, I've just updated the UE4 plugin to try and get a little more details on that error.
So we'll have to try again using tomorrow's daily build.
I'm still not sure what exactly is causing that error, something seems to be preventing HAPI from initializing properly.
Are you using the “main” houdini installer or the houdini engine one?
Here's a few things you can try:
- Have you tried using a TCP Socket session instead of a named pipe?
(change the session type in the project settings, then restart unreal)
- If that still fails, you can try starting the Houdini Engine session directly from Houdini:
Launch Houdini, then in Windows > Houdini Engine Debugger
Start a session on that window.
Launch Unreal, and in the project setting, make sure “Start automatic server” is unchecked, and that the session settings match the one in the Houdini Engine Debugger window.
Restart Unreal.
The unreal plugin should now be connected to the opened Houdini via Houdini Engine.
If all of the above fails, I've just updated the UE4 plugin to try and get a little more details on that error.
So we'll have to try again using tomorrow's daily build.
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- rudeypunk
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- rudeypunk
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Great News Dpernuit!
I changed the project TCP Socket session instead of a named pipe. That had no effect.
I tried pre-launching Houdini Engine Debugger then opened my UE4 session. Still no positive response from the UE4 Output Log. However, for giggles, I tried dropping a HDA to see If I could get any more error messages … and it worked!
I'm not sure why it is working now but it definitely worked! I did notice that the HDAs appeared in the Houdini session and disappeared when I closed the UE4 session. IS this a characteristic of the Houdini engine debugger? When I re-opened my UE4 session, my object geometries were still there but I lost all my textures. Interesting that the HDAs did not re-appear in the Houdini Session. I deleted the HDAs from the UE4 scene and re-dropped them in. The full HDAs came back with textures and the nodes re-appeared in the Houdini session.
Is this the expected behavior? Still more puzzles to figure out especially with the texture and material persistence!
This is definitely a huge step forward from where I was yesterday!
I changed the project TCP Socket session instead of a named pipe. That had no effect.
I tried pre-launching Houdini Engine Debugger then opened my UE4 session. Still no positive response from the UE4 Output Log. However, for giggles, I tried dropping a HDA to see If I could get any more error messages … and it worked!
I'm not sure why it is working now but it definitely worked! I did notice that the HDAs appeared in the Houdini session and disappeared when I closed the UE4 session. IS this a characteristic of the Houdini engine debugger? When I re-opened my UE4 session, my object geometries were still there but I lost all my textures. Interesting that the HDAs did not re-appear in the Houdini Session. I deleted the HDAs from the UE4 scene and re-dropped them in. The full HDAs came back with textures and the nodes re-appeared in the Houdini session.
Is this the expected behavior? Still more puzzles to figure out especially with the texture and material persistence!
This is definitely a huge step forward from where I was yesterday!
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- jrminor3d
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- dpernuit
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Hi,
I'm glad you got the plugin working, but im still puzzled as to what's causing your original issue.
Did you restart unreal after changing the session type to TCP? What type of session are you using in the HE debugger?
As for the other things you mentionned, that's the way Houdini Engine work:
- When creating an asset in UE, the corresponding HDA is created in HE.
- When deleting an HDA in UE (or closing UE), the corresponding nodes (HDAs/inputs) are destroyed.
- When reloading the level, the unreal geometry is loaded for the Houdini Asset Component, but the corresponding nodes (HDA/inputs) are only recreated when recooking the HDA in unreal (after a parameter change for example).
- For the textures generated by the HDA, they are stored in material/texture uassets in the Houdini Engine/Temp directory.
Those temp files arent saved automatically, so if you didnt save them when closing UE, they need to be regenerated by the plugin.
I'm glad you got the plugin working, but im still puzzled as to what's causing your original issue.
Did you restart unreal after changing the session type to TCP? What type of session are you using in the HE debugger?
As for the other things you mentionned, that's the way Houdini Engine work:
- When creating an asset in UE, the corresponding HDA is created in HE.
- When deleting an HDA in UE (or closing UE), the corresponding nodes (HDAs/inputs) are destroyed.
- When reloading the level, the unreal geometry is loaded for the Houdini Asset Component, but the corresponding nodes (HDA/inputs) are only recreated when recooking the HDA in unreal (after a parameter change for example).
- For the textures generated by the HDA, they are stored in material/texture uassets in the Houdini Engine/Temp directory.
Those temp files arent saved automatically, so if you didnt save them when closing UE, they need to be regenerated by the plugin.
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- rudeypunk
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Hi Dpernuit -
I was using TCP Socket Port 9090.
I cannot remember if I restarted UE4 after changing the Session Type. I probably did since that is the general method for getting anything to kick in with UE4.
While I can get Houdini engine to engage in UE4 after turning on the Houdini Engine Debugger before, I still can not bring Digital Assets into UE4 by themselves. I am at a loss for this disconnect as well. It would be great if We could find a solution for this but at least I have a temporary work around.
Thank you for the explanation for what's going on under the hood with Houdini Engine in UE4.
Cheers
I was using TCP Socket Port 9090.
I cannot remember if I restarted UE4 after changing the Session Type. I probably did since that is the general method for getting anything to kick in with UE4.
While I can get Houdini engine to engage in UE4 after turning on the Houdini Engine Debugger before, I still can not bring Digital Assets into UE4 by themselves. I am at a loss for this disconnect as well. It would be great if We could find a solution for this but at least I have a temporary work around.
Thank you for the explanation for what's going on under the hood with Houdini Engine in UE4.
Cheers
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- Colby Winfield
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Hey Rudey,
I'm having a similar issue to you. I can drag and drop HDAs into Unreal, but the Houdini logo is the only thing that appears. I've tried changing the session type with no success, reinstalling Unreal Engine - nothing works. I'm at a loss here. I have a valid Indie license purchased, and the License Administrator tells shows that the Engine license is being used when an Unreal scene is open.
Unreal also seems to load all the nodes from my HDA's, but after all that it just displays the Houdini logo.
Were you able to fix this problem?
Best,
Colby
I'm having a similar issue to you. I can drag and drop HDAs into Unreal, but the Houdini logo is the only thing that appears. I've tried changing the session type with no success, reinstalling Unreal Engine - nothing works. I'm at a loss here. I have a valid Indie license purchased, and the License Administrator tells shows that the Engine license is being used when an Unreal scene is open.
Unreal also seems to load all the nodes from my HDA's, but after all that it just displays the Houdini logo.
Were you able to fix this problem?
Best,
Colby
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- rudeypunk
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It's been a while since I addressed this issue. The problem went aware more or less after I changed machine, which really isn't an option. I was able to figure out a work around while using the Houdin Engine debugger, https://www.sidefx.com/docs/houdini/ref/henginedebugger. [www.sidefx.com] What that work around was I do not know. It took some sleuthing for sure while using the output window in UE4 to track the project and identify the issues.
OK I just looked at the thread. I had to open up the debugger and get it “connected” to a UE4 session before launching the Houdini engine. This is not an ideal solution since One must open a Houdini session initially to use Houdini engine.
Sorry, not much information there. Just connect to UE4 first before launching Houdini engine.
OK I just looked at the thread. I had to open up the debugger and get it “connected” to a UE4 session before launching the Houdini engine. This is not an ideal solution since One must open a Houdini session initially to use Houdini engine.
Sorry, not much information there. Just connect to UE4 first before launching Houdini engine.
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- Colby Winfield
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rudeypunkStrange it doesn't look like that's in Houdini 18. There's the Houdini Engine SessionSync which I'm testing out. It seems when it's not started, Unreal isn't finding a valid Indie license.
I was able to figure out a work around while using the Houdin Engine debugger
But either way, I'm still having the issue of the Houdini logo appearing instead of any HDA. I actually got it to randomly work once, but I cannot replicate it.
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- dpernuit
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Session Sync is the updated version of the Houdini Engine Debugger.
While the debugger only updated Houdini from Unreal, SessionSync works in both ways when supported (in v2), so changes in Houdini are also reflected in Unreal.
In version1 it will be only unidirectional (UE > H) like the debugger.
One thing to know is that the plugin doesn't pull a license until you instantiate an HDA, or modify an existing one.
You can also manually start the HE session (file > Restart Session) to check on the license status.
After doing that, you'll be able to see the info regarding the license acquired in the settings.
If the HDA you're instantiating only shows the houdini logo:
- either the HE sessions could not be created, and the UE4 log should give a little insight on what the error is.
- if the session was started, then it could simply be that you're HDA is just not generating any geometry.
In that case, the plugin will have created the parameters and inputs in the details panel, but will display the Houdini Logo in the level as no output was created from the node.
In both case, sending us the logs will help us figure out what the issue is.
While the debugger only updated Houdini from Unreal, SessionSync works in both ways when supported (in v2), so changes in Houdini are also reflected in Unreal.
In version1 it will be only unidirectional (UE > H) like the debugger.
One thing to know is that the plugin doesn't pull a license until you instantiate an HDA, or modify an existing one.
You can also manually start the HE session (file > Restart Session) to check on the license status.
After doing that, you'll be able to see the info regarding the license acquired in the settings.
If the HDA you're instantiating only shows the houdini logo:
- either the HE sessions could not be created, and the UE4 log should give a little insight on what the error is.
- if the session was started, then it could simply be that you're HDA is just not generating any geometry.
In that case, the plugin will have created the parameters and inputs in the details panel, but will display the Houdini Logo in the level as no output was created from the node.
In both case, sending us the logs will help us figure out what the issue is.
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- Cristiano Cesolari
- Member
- 3 posts
- Joined: Sept. 2013
- Offline
Anyone got success sorting out what is the problem?
I updated Houdini to 18.5.408 and bam here the error
Never had this kind of problem with older versions. Strange thing is that if I try to load an old hda made with an older houdini version works fine.
I updated Houdini to 18.5.408 and bam here the error
Houdini Installation was not detected. Failed to locate or load libHAPIL.dll. No cooking / instantiation will take place.
Never had this kind of problem with older versions. Strange thing is that if I try to load an old hda made with an older houdini version works fine.
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- Hatman_Alchemy_New
- Member
- 1 posts
- Joined: Feb. 2021
- Offline
This is so frustrating. When I first tried Houdini a year and a half ago I had this issue it took ages to fix it. I have now returned to Houdini for the Game Jam Assets and my new install of 18.5 has this issue again. I am on a Mac and did a fresh install and renewed my licences. I will probably waste a whole day trying to fix this. I have allowed Houdini in my firewall and restarted my session and and and ...
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