Just for reference - we've resolved this via email. I'm going to look to add a FAQ to help other users in the near future.
Can you please tell me what the solution was? I have a similar problem. beorg cannot see any file.
Could you provide some more details about your issue? In the previous case it was making sure that the directory existed on the other sync service before having beorg successfully start working. The user copied across the files outside of beorg and then used a fresh install of beorg.
My issue was actually resolved. My beorg was linked to a previous Dropbox account I no longer used, unlinking and linking it again sufficed.
This happened because I had previously installed and uninstalled beorg, and it retained the link settings.
Good news! The Dropbox SDK stores its credentials (sensibly) in the keychain which doesn't get wiped when an app is uninstalled - but this can be confusing when you expect everything to be reset when reinstalling. Thanks for your update.