Last fall I contacted you regarding issues with Simile, and found that a new update was available that fixed the problem. At that time I subscribed to everything that looked like it would provide update info, but apparently I checked the wrong boxes (got all the stuff about C-Roads). Added some more subscriptions this morning.
So, still running 6.5 on MacOSx El Capitan 10.11.6, 16GB of DDR3 memory, nothing else running, and Simile starts up and just disappears with no error message or residue of what happened.