The simulator crashes with application relaunch

We are just in the beginning of the new project, so it has only ~200 code rows. But many times with application relaunch, the simulator crashes. What could be reason for it and how can I find out this reason?

Currently I work on beta-releases 934/935 versions, but I also receive these crashes on version 870 that we used in our previous project and never saw this issue before.

[import]uid: 172733 topic_id: 32000 reply_id: 332000[/import]