I have the btsync package installed in two machines, one is Ubuntu Server and another is Ubuntu Desktop, both 14.04. The btsync-daemon refuses to keep running after the machines are booted or when I restart the service. Right after restarting the service, its status is "running". A few seconds after, it's "not running". When I remove sync.pid and restart the service, it runs normally. This behavior happens on both machines and is happening for some time now. Any tips on this issue?