I Checked permission chmod and all files, looks good there. I did notice a few of the files were set at 777 in the gallery with the problems and a bit lower in the test gallery.
Just to waist time I did a quick check of each PP PHP page manually checking each in IE. Only the install and upgrade page's work at all. everything else is blank white.
Just in case I checked the filelist.txt and all required files are there. (doesn't mean there isn't a problem in one of them)
Also as a comparison I opened all my (test gallery) files in dreamweaver looking for the database prefix I used to active it and didn't find it. I'm assuming the prefix is located in a pp_ file.
