Hi, Thanks for looking into this! In reply to your questions - The option "Don't keep activities" is UNchecked on my phone. - The application crashes both when either in the foreground or in the background, this doesn't seem to make a difference. - Steps to reproduce for me are simple: Start BTSync. Wait. Watch my phone reboot. The time until the reboot varies. Sometimes it's almost immediately, sometimes it takes a few minutes. If the app stays alive for long enough, it does show the folder I added, and it also shows the other machines that have that share. Sometimes it even starts syncing. But the phone will _always_ reboot after a while. As long as I do not start the btsync app, the phone does not reboot. Hope this helps, Jeroen