I just got the following popup when trying to unpause lightroom mobile syncing:
"This appears to be a duplicate or automatically created backup of your catalog." With this, my catalog no longer syncs. It gives me the option of deleting all mobile data and "restarting" the sync, but this is the same catalog I've been using -- I've done the restart move before and while it works, i'm currently syncing over 20,000 images so it takes a while, and I'm unclear that it won't get corrupted again. Is there any way to simply say that the catalog on my computer that i'm opening IS the production catalog and not a backup, and force it to sync?
Thanks for your help.
exactly same issue with me today !!!!
Old topic, but I found a solution:
With Lightroom closed, go to C:\Users\"yourusername"\AppData\Local\Adobe\Lightroom\Caches\Sync Data and delete the folder "Sync.lrdata"
Open Lightroom, resume sync, and everything should work.