Well, if you've both got Nvidia cards then there must be something awry there somewhere. I would definitely contact Smith Micro about it. They are very helpful and have been my first port of call when things go wrong.

I asked them if browsers can conflict with Poser due to the way they handle Flash and they said that Safari was a good one. I've used it ever since and can run PP2012 side by side with it without issues. Google Chrome and Firefox aren't good, but, you need IE around to dowload and install Flash updates.

Good luck guys

CHEERS!