Re: Possible intallation errors
I don't think leaving 'Enable Open GL Drawing' unchecked will hurt anything at all. I'm on a Mac and I've had it unchecked ever since CS4 came out! Anyway, check out Adobe's Tech Note referring to Open GL at the link below.
http://kb2.adobe.com/cps/404/kb404898.html#supported
Also, you can find a list of graphics display cards that were tested by Adobe before the release of Photoshop CS4 at the link below.
http://kb2.adobe.com/cps/405/kb405711.html
