This morning I got the idea to try it from a different user on the same Mac, so I created a "Band in a Box" user, and logged in as that user selecting the "Save As.." menu item does NOT cause a crash.

So I assume the problem is some piece of configuration or saved state in my home folder. I've deleted every file with "Band-in-a-Box" "pgmusic" or "PG Music" in the name from my Libraries folder and it didn't help. Any other ideas?

Still no response from support