I have read a FAQ: If you try to add a folder to BitTorrent Sync and you see this message, it's likely that you've already used the "secret" you're entering for one of the other folders you're currently syncing. It's not possible to sync two separate folders on the same device using the same "secret". But this is not my case... I have directory containing about 60,000 files. Which according to FAQ should not be a problem. It is syncing fine, but GUI shows error BitTorrent Sync cannot identify the destination folder. Nevertheless directory is syncing fine, or at least I haven't found any problem. If I change a secret for a while, and than set back the old one, everything is correct again. But the "error message" appears in 24 hours again... Any queses? I think this might be a bug. Is there any log file I can check? I am using ubuntu linux, The machine is running 24/7. Btsync Version 1.1.82 ( up to date ). Can this be caused because of rescans of folders? It can take more than 10min but, according to FAQ rescans happens every 10mins by default. I would like to turn off this setting (or set 24hours) because it is too often. But I haven't found the option in GUI. Is it deprecated? Thanks for suggestions hydrant