I can't backup or sync a folder between 2 devices if the version of BtSync is 1.4.x on each devices. I'm pleased to have used the 1.3.x versions on my PC and my Synology (NAS1) in R/W mode.Then I updated this configuration to new 1.4.x version, then not synchronized anymore, only has "No peers" messages.Then I downgraded the BtSync on my PC to 1.3.x, after the syncing is works perfectly again.I set up a backup folder on my Raspberry Pi (NAS2) with BtSync 1.4.x also, and added the Ready Only key to the backup folder. But "No peers" on NAS2.So I can't create syncing between two 1.4.x versions.