1 Reply Latest reply on Jul 27, 2015 11:14 AM by RikkFlohr

    Will not launch because it says it is already opened, but isn't


      I have Lightroom 5 on my PC. Everytime I try to open it, it says " The Lightroom catalog named 'Lightroom 5 Catalog' cannot be opened because another application already has it opened". What does this mean? And how do I fix it? it is not open anywhere else on my computer.