When I quit Accordance Saturday night, it crashed rather than quit cleanly. If I relaunched Accordance and allowed it to recover the session, it would crash again when I tried to quit. If I told Accordance to ignore the saved session, reverting to my default workspace, Accordance behaves properly on quit.
If I set up part of the arrangement I was using, Accordance again crashed when quitting. It is very easily reproducible. Here's the simplest change that leads to the crash:
I am using ESV as my primary text. Add a parallel text using the McArthur New Testament Commentary and make it vertical. When quitting the crash occurs.
I'm running Mac OS 10.8.5. Dropbox synch is enabled. (The synch status window is displayed prior to the crash.)