I use an RSync plugin to synchronise my work with a server.
Whenever the number of files changed on disk is very large, ST3 disappears.
On Console, all I find is “(com.sublimetext.3.48784[66483]) Exited with code: 1” which not terribly helpful.
I’m running on OS X, Maverick. My current build is 3059, but this has been happening for a long time.