Well I finally got Carrara7 working, it looks like the mother of problems, the displaydriver was the cause. After updating the driver, Carrara without any problems (so far).
I feel a bit stupid, because usually this is he first thing, I'm looking at when I have this kind of problems.
Well. I must have been sleeping.

regards,

Bopper.

-How can you improve things when you don't make mistakes?