Thanks for 2.1.2 - fixed my freezing crashing interface and my frozen, should have been rotating, but didn't, tray icon. My issues started in Win7 most likely related to a failing Hard Disk. Once I replaced the drive, uninstalled BTSync, reinstalled it, and then started to resync my measely ~TB of data, BtSync would continually freeze and crash. Win 10 came out so I did MS upgrade (yeah dumb move on my main work machine), the crashes became less and the interface became more responsive, but still eventually froze and died. Looks like it is back to normal now , and Win 10 seems to be working good too. Kudos to the Developement and support team. Hardware and OS issues on users machines may be a large part of any problems people are experiencing. Time to replace my 980x and x58 Board. 8 core Intel goodness here I come.