It seems if you switch to OGL 2.1 and load a scene that was created while H13 was set to OGL3.3 that scene won't load and cause a segmentation fault, crashing houdini. I didn't investigate this thoroughly, it may be that only softshadows or IBL or something causes this error.
After switching back to 3.3 the scene loads fine.

Which system, gfx card, driver and any test scenes? thanks!

OneBigTree
It seems if you switch to OGL 2.1 and load a scene that was created while H13 was set to OGL3.3 that scene won't load and cause a segmentation fault, crashing houdini. I didn't investigate this thoroughly, it may be that only softshadows or IBL or something causes this error.
After switching back to 3.3 the scene loads fine.

The General Answers for these problems are :

1. Install Last Houdini Daily Build
2. Update your VGA driver with newest one



If these options doesn't work , so search for another solutions !
:wink: