Ok. Let me try that.
Maybe I should have added this info earlier. As I was getting a number of .dll errors (for MB as well as other apps) I had clean installed windows 11 22h2 a few days back and as the error reports persisted, though in lesser frequency, I updated the BIOS of my ASUS TUF Gaming B660-Pluswifi D4 motherboard to the latest. .dll errors have stopped but MusicBee has this AppCrash.
I'll run the disk integrity utility as you'd suggested and see what happens. Incidentally I'd run DISM and SFC before reinstall of windows.
As you can see I have a lot of time on my hands! But all said and done maybe I can live with this . Thanks all the same.