My Mac went crazy, so I restarted it. My CS6 disappeared from my dock, so I tried to open it from my applications folder. Doesn't work, computer says I need to uninstall and reinstall photoshop. I try to uninstall, but failed. Window suggests I restart, quit all apps, and try again. I did, but no difference. In desperation I threw the CS6 icon in the trash and deleted it, then tried to install anew from my disc. Window says I cannot install as there are traces of the old CS6 still on my computer. Gahhhhh.