I have a mac, and Photoshop CS6. Whenever I try to open it, it says "Could not initialize Photoshop because the preferences file was invalid (it has been deleted). How do I change that? I have tried the troubleshooting tip of manually moving the preferences file, but the preferences file isn't even there. Help please.
Try this: Hold down cmd-opt-shift while starting photoshop. You should see a "reset preferences" dialog box. Agree to it, and see if that fixes the problem.