When I have Blueprint Editor open I sometimes minimise main window in order to reduce stress on my Mac - CPUs begin to run hot with both windows open.
Often when I close Blueprint Editor in this scenario it crashes UE. I am currently running Yosemite with UE4 4.6 but have experienced this problem with Mavericks and from about UE4 4.3 onwards.
I have attached a crash report which hopefully may of some help.
Thanks
Edit: Sorry should have filed this under a bug report. Thought I did. Can someone move this for me please? Thanks