I have looked through the forum bit cannot find a solution to this. Your help appreciated. I have a Linux machine running Ubuntu 12.04.4 LTS and btsync 1.3.67 and another machine running Windows 7 and btsync 1.3.67. The machines had a lot of data to sync so started off on a LAN, no problems, all worked like a dream. I then separated them so they now connect over the internet. They connect ok and recognise the data needs to be transferred but the data does not move from the Ubuntu machine to the Windows one. I have created another share between the machines and the data happily comes from the Windows machine but not the other way around. Restarts and re-boots at either end make no difference. In desperation I stopped the Ubunru version ,deleted the /var/lib/btsync/*.db files and started it again. Btsync re-indexed everything and then started transferring data. It gave up after a while though. Here is the end of my Ubuntu log file, it is repeating this: 20140329 18:28:35.129] ping 192.168.45.130:58629[20140329 18:28:35.680] SyncFolderNotify: "Invoice.pdf.!sync", event = "IN_MODIFY"[20140329 18:28:35.680] [OnNotifyFileChange] /home/shares/Temp/Invoice.pdf.!sync, source = NULL[20140329 18:28:35.705] State sync finished for folder /home/shares/Sound[20140329 18:28:35.713] Fully synced with 00A6133B57BE22C67985FE5CFD2D6B490F3BC34D[20140329 18:28:35.730] /home/shares/Temp/Invoice.pdf: Piece 33 complete[20140329 18:28:36.084] Torrent /home/shares/Films/Top Gear/Top Gear S03-04.m4v status:137 error:<NULL> meta:1 conns:0 io:0[20140329 18:28:36.084] Force unloading torrent /home/shares/Films/Top Gear/Top Gear S03-04.m4v[20140329 18:28:36.086] Going to sync state with peer 86.133.18.159:58629 (00A6133B57BE22C67985FE5CFD2D6B490F3BC34D)[20140329 18:28:36.087] Torrent /home/shares/Temp/White Goods.jpg status:137 error:<NULL> meta:1 conns:1 io:0[20140329 18:28:36.087] Torrent /home/shares/Temp/White Goods Ludlam.jpg status:137 error:<NULL> meta:1 conns:1 io:0[20140329 18:28:36.087] Torrent /home/shares/Temp/Invoice.pdf status:137 error:<NULL> meta:1 conns:1 io:0[20140329 18:28:36.087] Send ping to peer (00A6133B57BE22C67985FE5CFD2D6B490F3BC34D) for share F01707540DD5F5DD70CAAADA00272A04602AF6B0:[20140329 18:28:36.087] ping 192.168.45.130:58629[20140329 18:28:36.087] Send ping to peer (00A6133B57BE22C67985FE5CFD2D6B490F3BC34D) for share F01707540DD5F5DD70CAAADA00272A04602AF6B0:[20140329 18:28:36.087] ping 86.133.18.159:58629The 192.168.45.130 is the internal IP address of the Windows machine. The folders with problems are: /home/shares/Temp /home/shares/Films Any help appreciated. Happy to provide more info on the log files and screen shots.