2 Replies Latest reply on Sep 28, 2016 1:16 PM by johnm43152428

    Cannot open Lightroom


      I cannot open my lightroom application. I get a pop up box with the following message:


      The lightroom catalog named lightroom 5 cannot be opened because another application already has it open. Quit the other copy of lighroom before trying to launch.


      I'm running windows 7, 64 bit


      Please help