I just upgraded my G4 1.2 GHz iBook to Leopard. So far everything works as expected except for one thing: I can't open any of my .psd files with the Preview app. I often use this because I need to quickly print out one of my images and Preview opens much more quickly than Photoshop.
I could do this when the machine had Tiger installed, but now all I get is a Question Mark once the file is opened. I can view my .psd files on my home iBook with Leopard on it, but not the one I use for work.
I tried deleting the plist, but that didn't help.