Added support for landscape creation in Unreal 5.5.

Fixed an isse where the edit layer name could be ignored when creating a landscape.

Landscape import performance optimizations.

Fix degenerate cases when computing bezier() segment slopes on animation channels.

Fixed a bug that was causing HAPI_GetPresetNames to crash when using Thrift sessions.

Added new callbacks to APEX's string library: ToInteger, and ToFloat.

Added 'A' (albedo) event type in light path expression so that it's possible to write out albedo AOV based on specific path or BSDF component.

Fixed a bug where box-select wouldn't select instanced primitives on macOS

Fixed Edit Material Network LOP which would occasionally use Generic VOP instead of the Mtlx Standard Surface VOP.

Fixed a bug where some animation could be lost when merging APEX Animation Layers in certain cases.

Hide deactivated lights from the light linker since it has no way to activate them.

Fix CH_Manager.h in the HDK to work around a bug in gcc13 so this compiler can be used to build HDK plugins that include this header.

Fix update issue when locking/unlocking a parameter in the light mixer.

Fix hotkey editor showing the Esc key assignment window when pressing enter in the search field.

Fixed a potential crash in the APEX Character Deformation display option, along with a bug that could cause stuck geometry in certain situations.

Update Houdini's USD library to include the following fix:

• Avoid crash when writing USD to volumes mounted to NTFS folders

Fixed a crash when using detail-level material assignment on particles

Made level instances read only when not being edited. Fixes several bugs when using HDAs in level instance levels.

HDAs are now placed in a dormant state if loaded as a level instance inside a level. Editing the level instance will allow the HDA Component to be cooked. This fixes several issues when using level instances.

Added a Combine Normals COP that blends normal maps together.

Fix an issue in the attribute paint state where if the geometry intersection failed, it could sometimes connect the stroke to the origin unexpectedly.

On Windows, relax HDK compiler version check for the latest Visual Studio 2022 compiler update.

Fixed a crash in Poly Bevel 3.0 SOP when given atypical input topology, consisting only of points and lines.

Fixed a regression that caused an infinite loop setting landscape spline segment meshes by attributes.

Fixed an issue with Bullet's soft constraints which could cause unexpected rotation behaviour in certain situations when the rest length was non-zero.