I just upgraded to 2012 and it crashed. I suspended the computer, then restored it, and BIAB crashed. I checked for hidden dialogs, but didn't find any.

Also the # staves bug is still there (choose auto-set, and it won't have enough staves for the entire tune. Set it to 9 staves, and only 8 will appear. This isn't rocket science.).

Just the installation showed that PG Music still doesn't get the concept of Program Files and Documents.