No idea. I ditched 32-bit and haven't looked back. The extra memory addressing makes everything so much faster. Not spending all of my time page-swapping memory. Go to adobe's online support and see where you get.
So you are running Vista/32 ? Not sure what the installer ends up saying, but it sounds like it might be a glitch. Have you called Adobe's help line or used the online chat support? I usually do the latter since it is faster in most cases, and allows you cut/paste information to the support person.