Hi Folks

I am a new user of Houdini, and am trying to get my head round the basics of a node-based system.

I load a sample file, and create a Mantra render node, but when I click “Render” inside the node properties, I get the following error:

“No licenses could be found to run this application.
Please check for a valid license server host”

Sometimes it renders, sometimes I get this message.

Can anyone advise on why this might be happening? I have tried closing the application and loading again, but the error still appears.

Thanks
Richard