Hi RJRFT
Crash reports are send to MYOB developers anonymously, so don't expect a reply. It these are monitored at all, it is only to detect new issues for example after an update. You need to contact MYOB directly if you need support to resolve the issue. Next time it crashes, click the View Error Details button in lower left corner and copy and paste or attach as a text file to this post. That error report will give a moderator or a forum reader a clue and may be able to point you in the right direction for how to identify and fix.
A common issues, esp if crashing frequently is something like a missing account link on a tax code. v19 allows you to have tax codes without linking accounts to it, AR2023 does not. If there is no linked account it will crash, and the crash report will give some clue about the cause.
Regards
Gavin