Hello everybody

I download Houdini 9.1 Aprentice to test it, but I can't work wit it. When I try to do simple things (for example create a grid), Houdini show me a error message with this text:
3700:Fatal error: Segmentation Fault
and then Hodini close.

someone knows why this error appear?
and how repair it?

I use Windows XP 64 bits

Thanks in advanced

It was a driver problem.

I have been updated my graphic drivers and now It's seems to run perfectly