If you can find a crash log, and post the relevant portion it will help the PG folks immensely, they seem to be very good at reading them.

Here is how to get the crash log file :
Go to the "Utilities" folder on your hard drive and launch the "Console" app.
In the column on the left you should see "User Diagnostic Reports", and under that there should be an entry that says something like "Band-In-A-Box_...(bunch of numbers-date and time).crash".
Hilight that "Band-In-A-Box_...(date and time).crash" entry in the left column and it will open up the crash log in the right side of the window.

There is a lot of text in a crash log, so to copy and past the whole thing on the forum will be overkill, although PG may ask you to email the entire log to them.

Here is how to find the important part to post here :
You will see, near the top of the file, there should be something that says which "thread" actually crashed (for example "Crashed Thread: 0 Dispatch queue: com.apple.main-thread".

The threads are all listed in numerical order in the crash log, so if you can find the paragraph associated with crashed thread.
For example, I posted a crash log not too long ago where "thread 0" crashed, and here is what I posted :

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.pgmusic.Band-in-a-Box 0x00011c5b P$MAINPROC_BREAKONERROR$LONGINT$POINTER$POINTER + 171
1 com.pgmusic.Band-in-a-Box 0x00026888 FPC_BREAK_ERROR + 72
2 com.pgmusic.Band-in-a-Box 0x006710e1 STYLZU_TSTYLZDIALOG_$__FORMCREATE$TOBJECT + 2977
3 com.pgmusic.Band-in-a-Box 0x004b2172 FORMS_TCUSTOMFORM_$__DOCREATE + 82
4 com.pgmusic.Band-in-a-Box 0x004b04ba FORMS_TCUSTOMFORM_$__AFTERCONSTRUCTION + 58
5 com.pgmusic.Band-in-a-Box 0x004b8002 FORMS_TFORM_$__CREATE$TCOMPONENT$$TFORM + 210
6 com.pgmusic.Band-in-a-Box 0x00668ebd STYLZU_RUNSTYLZDIALOG$TFORM$$BOOLEAN + 333
7 com.pgmusic.Band-in-a-Box 0x0008ccd4 MMYUTILS_MENU28MENUCHOICE$SMALLINT + 372
8 com.pgmusic.Band-in-a-Box 0x001cf30b W7_RESPONDTOJYBUTTONMOUSECLICK$LONGINT + 2859
9 com.pgmusic.Band-in-a-Box 0x001cf98c W7_POSSIBLYHANDLEJYBUTTONMOUSECLICK$POINT + 188
10 com.pgmusic.Band-in-a-Box 0x001dc016 W7_W7WMLBUTTONUP$POINT + 54
11 com.pgmusic.Band-in-a-Box 0x001d86da W7_W7CONTENTMOUSEUP$$BOOLEAN + 170
12 com.pgmusic.Band-in-a-Box 0x00168905 BANDINABOX_HANDLEMOUSEUP + 261
13 com.pgmusic.Band-in-a-Box 0x001738c1 BANDINABOX_PROCESSEVENT$EVENTRECORD + 241
14 com.pgmusic.Band-in-a-Box 0x00173a73 BANDINABOX_HANDLEEVENT2 + 371
15 com.pgmusic.Band-in-a-Box 0x00011945 P$MAINPROC_MAINLOOP + 21
16 com.pgmusic.Band-in-a-Box 0x00030e56 FPC_SYSTEMMAIN + 70
17 com.pgmusic.Band-in-a-Box 0x00011902 _start + 216
18 com.pgmusic.Band-in-a-Box 0x00011829 start + 41

Hopefully this helps.

- Jay

MacPro 5,1/12 core@3.46GHz -- OS X 10.15.7 -- ATI 7970 -- 32 Gig RAM -- Crucial 500GB OS SSD -- Samsung EVO 1TB Audio/Sample SSD -- BIAB 2024 -- Logic Pro X -- Cubase Elements 14 -- Too many plugins