Hi, Mike.
Please describe your exact process when you installed and fired it up for the first time. Leave nothing out.
I may know the problem but I'm only guessing till I see it. If I'm right, it's a bug and I know the workaround.
It was a vanilla install: download files, install in order, enter permissions as needed.
Files installed this latest time in order (I didn't bother with the 317 update as it seems to make no difference to this issue).
bandinabox_2019_pro.pkg
realtracks_pro_3.dmg
realtracks_pro_2.dmg
realtracks_pro_3.dmg
realtracks_pro_4.dmg
Then start the application and watch it bounce, not to come back...
There is quite a lot of other audio applications on this machine, plus plugins and the like, but they also exist on my laptop and that hasn't got this issue (it installed cleanly)