Using Mac OSX 10.13.6 and BA 188.8.131.52
After reviewing several topics on the BA Forum and HOURS of experimenting to determine why the program crashes after syncing purchases, I have isolated the cause to the hh.cmt (Harmony/Parallel??) module.
When the hh.cmt module is removed/deleted, the program works when restarted.
When the hh.cmt module is replaced (or synched/installed again), the splash screed shows for a microsecond on restart and the program crashes.