'small' dump file attached. Can send large or huge if you need it...
Seems to occur every time I try to do a spectral view. Tried a couple of albums, same result.
Sorry about this. We managed to introduce a bug in V12.0.1.
We have a fix for this in the latest Beta. Download links are here:
https://www.alpinesoft.co.uk/forum/index.php?topic=2567.0