I see a registered version of Photoshop CS5 Extended and Photoshop CS6 upgrade (both for Windows). Are you installing on a Mac computer? If so, a Windows serial won't work on Mac.
If you're installing Photoshop CS6 on windows, it will ask for both of your serial #s to activate. Are you entering the correct one when it asks for your CS6 serial and it asks for your prior version serial?