3 Replies Latest reply on Mar 14, 2015 4:54 AM by Just Shoot Me

    Problem Loading Lightroom


      Hello everyone,


      Recently my installation of lightroom has stopped loading giving this error message:


      Adobe Photoshop Lightroom 5 cannot be opened because of a problem.

      Check with the developer to make sure Adobe Photoshop Lightroom 5 works with this version of Mac OS X. You may need to reinstall the application. Be sure to install any available updates for the application and Mac OS X.


      I have uninstalled and reinstalled multiple times with various different versions of lightroom. I have cleared the preferences and various other things in the library files, I have run all the various OS X cleaning tools, mended file permission etc.


      The frustrating thing is that it used to work fine! I can't pin point a particular change that happened before it stopped working.


      I have a MacMini 1.83 GHz Core 2 Duo, 3GB Ram OS X 10.7.5.


      Any suggestions would be much appreciated.


      Thank you.

        • 1. Re: Problem Loading Lightroom
          Just Shoot Me Adobe Community Professional

          Find the LR 5 Catalog Preview folder and delete it. The folder is called "Lightroom 5 Catalog Previews.lrdata". Lightroom must be closed and it is in the same folder as the catalog folder.

          • 2. Re: Problem Loading Lightroom
            stephanies3215174 Level 1

            Hi there,

            Thanks for the response, unfortunately I did what you suggested then reinstalled and it hasn't helped

            Many thanks

            • 3. Re: Problem Loading Lightroom
              Just Shoot Me Adobe Community Professional

              Although I used a Mac and OS X for several years I gave up on it for just these type of things happening out of the blue. No rhyme or reason for them.


              The only option I found to cure some of the glitches with OS X was to wipe the drive and start over with a fresh install of the OS and programs and or restoring the system from a known Good backup made with either Time Machine or one of the Disk Cloning apps available for OS X.


              You could try using Disk Utility to do a repair of permissions that is found on the First Aid tab. That sometimes fixed issues like this.


              It seems OS X sometimes forgets disk/file permissions and lock them as system, read only or restricted files stopping apps from opening or you saving files to a specific location.