Is each database being opened with OPEN REMOTE, or through a network connection to the computer and selecting the file directly?
Finally got a chance to talk to the user who had problems. Turns out he was just using a network "Favorite" shortcut to connect to the DB's, instead of OPEN REMOTE and didn't realize it. Problem solved.
Awesome! Peer-to-peer is allowed:
But can be prone to corruption if users go through the network instead of linking with Open Remote.
I'm glad you found it!