2 Replies Latest reply on Sep 11, 2013 10:23 PM by Barry_M81

    The extension 'GuideGuide' does not contain a valid signature. The extension will not be installed.

    Barry_M81

      Hi guys, looking for a bit of help as I can't install an extension for Photoshop. Managed to install it on another machine in the office and it works great.

       

      Specs:

      iMac OSX 10.8.4

      Photoshop CC

      Extension Manager CC

       

      Please let me know if you need anything else.