I am synching between three computers. Two run Yosemite and one is running Snow Leopard, and can not be updated due to software I that will only run as high as Snow Leopard. I updated Bittorrent Synch on the Snow Leopard machine. Now Bittorrent will not run on that machine. It looks like it is opening, but it does not launch a window, and it does not show up in Activity monitor. What can I do? Thanks!