I recently updated my LR CC 2015 on my personal laptop to LR Classic CC 7.2 when prompted. I read about the program, it sounded better and I didnt think much of it. I took my catalogue home did some work and then came back to the office and tried to open it on the work desktop which runs LR 6 standalone... no dice. I tried another laptop with LR CC 2015 and it said the catalogue file was too new to open. ARGHH. I made a bunch of edits to over 15,000 images and now I can only open it on my personal laptop?! Is there a way to export the catalogue as an older lrcat file? or a plugin for LR 6 to open the new lrcat files? I tried to search around but there is no obvious thread on this issue. WHY make the catalogue files not openable or offer backwards compatibility?