Select two text files in binder. Switch to Outline mode. Click on one of the files in the Binder that was selected. Scrivener immediately goes “Death Star” (exits) 
I can’t duplicate this with outline mode – doesn’t crash for me. But if I do the same thing but go into scrivenings mode I get 100% guaranteed crash. So: select two files from the binder, go into scrivenings mode, select either of the two files from the binder = 100% crash.
rgletter. are you able to reproduce this without the selected documents ever being loaded in Scrivenings mode? This seems like it’s tied to the Scrivenings crash which Tashe mentioned, and I think it can happen after Scrivenings view has been loaded, then switched to a different group view mode, which might then be what you’re seeing, if Scrivenings occurred before the outliner view.
FIXED in Beta 6. Thanks!