Similar issue before:
Thank you for your answer.
I tried the two solutions :
1. add enable_opengl_fbo no to my config.pro file
2. add g:win32_gdi to my config.pro file
But unfortunately the error and crash is still here.
I do not have any problem to launch Creo 6 and work with.
A lot of others parts with family table work very well.
I have problem with only one part.
The instances of this part are really simple. It is only disabling of some functions, that are at the end of the construction tree of the part. With no child function.
When I tried to disable these function manually in the tree. It works.
But not trough the family table ...
Any other suggestion that I can try ?