Previously had a problem with LR 6 (standalone installed from a DVD purchased directly from Adobe) not being able to access my catalog, located on an external drive. I use a MacBook Pro, with OSX Yosemite 10.5.5. This occurred at the end of a supposed trial of LR Mobile, which I had never downloaded/used. Despite the fact that I was unable to get LR to access a previous version of the catalog located on a backup external drive, Adobe insisted that the catalog was corrupt and supposedly fixed it. That worked fine for about three weeks. Today, I received an Adobe email stating that my 30-day LR trial had expired. This concerned me, as I had a purchased version and it hadn't been a month since the previous contact with Adobe to 'fix' the problem. So, I tried to open LR and received an error msg stating that it couldn't find the catalog. Her we go again. Despite what the Adobe rep (Gakhanna) told me previously, I am now firmly convinced that the problem is related to the expiration of a trial, since it's happened twice now, once at the expiration of the supposed mobile trial and now at the expiration of the supposed LR trial. Tried to call again but could not get to a menu item that allowed me to reach a rep this time, hence I am on this forum to report the problem. This is more than an inconvenience to me, as it is preventing me from accessing and processing photos to be used on calendars I wish to create for Christmas presents. It's time for Adobe to fess up and admit it's a problem with the 'trial' endings, not my catalog being corrupted. Help!!!!