Photoshop is angry. There seems to be no solution short of uninstall/reinstall. Is there a way to uninstall just Photoshop and then reinstall just Photoshop without messing with the rest of the suite. Everything else is running smoothly. I'm running CS6 Production Premium on Windows 7 64-bit.
Simply run the suite installer again. There is no way to install apps selectively from a suite otehr than by using the customization options in the full installer. If necessary, run the Creative Suite Cleaner Tool before reinstall. Though, to be honest, I think it's unlikely that your problems can be fixed with a reinstall. Perhaps simply the prefs are messed up or you installed some incompatible plug-in...