Maybe it could be fixed on user's side before official patch comes.

Open camera.cfg and find "[CAMERADEFINITION.0]"
Then find "[CAMERADEFINITION.1]", then "[CAMERADEFINITION.2]" so on.
Make sure that the number is not skipped nor duplicated.
Manually renumber them when omission or duplication is found.
In my case the culprit was duplicated number.

And of course, always make a backup when you fiddle with original files.

@GunStrauss For me a failure reset in the failure system now helped. After that and after pushing back a popped out breaker, the GNS530 went over the startup and welcome screen again.

Works perfectly in both the Baron and Bonanza. Did not touch the code I posted above.