I got the same reply from Waves and it worked for me too. Great! 
I too…updated my video drivers and have success with Waves 9 and Wavelab 7.2.1.
kidding me? I’ve got the standard WHQL ATI driver from Windows Update, do I need to update that one?
V9 revision TWO is out, + NLS!
Run your WOLI to get V9 rev2.
Do you know the changes?
Sorry I don’t, maybe very few aside NLS I suppose. If you see the demo page, many are 9.1, but don’t know more than this. 
How is V9r2 running for everyone here? Any crashes so far? Sometimes i will load a True Verb effect and the graphics are not right. Then i move the window a bit and it corrects itself 
. Is it time to upgrade my graphics card? Thanks.
How is V9r2 running for everyone here? Any crashes so far? Sometimes i will load a True Verb effect and the graphics are not right. Then i move the window a bit and it corrects itself . Is it time to upgrade my graphics card? Thanks.
Getting the same thing.
I thought I had this corrected with V1 by updating Graphics driver, but it seems to be back with V2…