Let me start by outlining my current setup: - Ubuntu server running btsync 1.4.75 - QNAP NAS running btsync 1.3.106 - multiple clients (EDIT: Windows) Up until now, everything was working fine, until I decided to upgrade my local client. I didn't know about 2.0 and upgraded anyways. Then a colleague accidentally moved a shared folder "A" and couldn't restore it ("Cannot identify the destination folder"). First, he tried to upgrade to 2.0 as well, without luck of restoring the local copy of "A". So I shared it again with him, selecting read and write permissions. He received "A", but only with read permissions. "A" is marked with 1.4 in the clients. Is this a general problem? Should we rather downgrade our clients to 1.4 or upgrade the server and NAS to 2.0 (if this is even possible)? Would this introduce new bugs in addition to the restriction of the 10 folder limit? Is it possible to upgrade folders from 1.4 to 2.0? I would be very happy for some help with this, as this is a production environment and I cannot risk any downtime.