[20130702 02:04:53.002] Error opening "/media/reds/MediaCenter/TV Shows/TVSHOW/Season 1/TVSHOW - Episode.mp4.!sync": [20130702 02:04:53.003] Error: TVSHOW - Episode.mp4 - WriteToDisk: Permission denied [20130702 02:04:53.003] Error: TVSHOW - Episode.mp4 - WriteToDisk: Permission denied [20130702 02:04:53.003] Error: TVSHOW - Episode.mp4 - WriteToDisk: Permission denied [20130702 02:04:53.003] Error: TVSHOW - Episode.mp4 - WriteToDisk: Permission denied I have 2 users btsync and anebg I had created a folder by user anebg and forgot to set write permission to group (so btsync could write to it). It resulted in the error above, and on the web ui, my upload was at max throughput and the "download left" (or upload left on the other node) never went down to 0. It remained at 70Mb(size of file) for minutes until i added the group permission. In theory I could've left it running all night long under a false sense of "being okay" and it would've transfered gigs over trying to sync one <100Mb file. It would be nice if in a further version, the error could bubble up to the web ui and stop trying to sync. I kinda just luckily tailed the log and found out. Using Ubuntu 12.04 on both nodes and the version from the ppa for servers.