Hey, just thought I would report in on my experience post update from 1.3.xx to 1.4.77. Essentially after running the update on my 2 readynas's everything broke, I reset the NAS's, I tried updating keys, I tried disconnecting/reconnecting, I un-installed 1.4.77 and re-installed it and it still didn't work properly. It would sync for a bit then stop and eventually the peers would drop off. Finally, I deleted the sync instances and then I deleted the folder we were sync'ing on one of the NAS's and started from scratch and everything started to work again. Half way through sync'ing one of the folders with 50GB of office docs it stopped sync'ing because it couldn't find its peer, I updated the key and it worked again. Another folder also stopped but when I looked at it's file progress it seemed to be stuck on a bunch of hidden system files that all started with "~$", they seem to be a windows temp file but have no file type allocated to them. I manually deleted these and it started sync'ing again. I put "~$" in the exclusion list thinking this would have fixed it but it didn't skip them and I noticed in Windows I couldn't search for them, I had to do a file listing and sort to identfiy them. I don't suppose anyone knows if there is a way to exclude all "hidden files"? Hope this helps someone else.