2 Replies Latest reply on Oct 9, 2015 12:52 PM by yaz6262

    lightroom 5.7.1 fails to backup on Mac OS 10.10.5


      When I backup upon exiting Lightroom I get this error message:

      We are sorry, Lightroom was unable to backup the catalog named "Lightroom 3 catalog"

      You may wish to check folder permissions or available space.

      After the failure message I check the location of the backup and get that it was modified today despite the error message.

      there is plenty of space on this HD and the permission are r-w-x for all users and the message appears on another external HD with even more space.

      I optimized the catalog today 'successfully' but then needed to repair the catalog before re-opening.

      I have 10 years and 40,000 images in this lightroom catalog and I am VERY concerned, please help!