Freezes if Renderman license in invalid

[erjiang]

Renderman for Blender freezes when trying to render if the rman license is invalid.

To reproduce:

• Change rman node ID so that the non-commercial license is invalid (by changing a network interface mac address, for example)
• Create a new Blender scene and change renderer to Renderman
• Try to render

Expected:

An error should be displayed somewhere in Blender with the Renderman error.

Actual:

Blender hangs

Renderman for Blender 25.2.0 Blender 3.6.2 OS: Linux

[prman-pixar]

@erjiang

This is a known issue. We currently don't have python bindings to specify an error handler when the renderer exits because of a license issue.

Is there a reason why you're trying to directly modify the license file?

[erjiang]

Is there a reason why you're trying to directly modify the license file?

I wasn't modifying the license file. I was trying to figure out why Renderman was not working even though I had a license. The issue was that having Docker installed will change the Renderman license node ID every reboot, but I didn't get an error message about the license in the Blender UI.

[prman-pixar]

OK, thanks for clarifying. At the moment, there's nothing I can do on the python side to verify your nodelocked license that is valid with respect to the host ID, unfortunately.