I chatted with Will at PG for a while. He had no idea but did give me new download links (thanks Will).
I thought I'd add a few more things:

I'm using Windows 7 64-bit, with the stock Security Essentials as my only Anti-Virus.
I checked the Recycle Bin - no BIAB stuff there.
I have not used System Restore recently, and I know it's not something like that since I appear to still have all of the RealTracks and other new files there.
I used Google Chrome to download the first file (BIAB itself) and Firefox + Downthemall to download the rest of them, including the Amplitube one I still have as far as I know.
The files are still indexed since they turn up in searches, but clicking on them in the search results doesn't work (file not found).

I'm downloading the program again and will see how it goes just reinstalling that.

Odd, hey? Thanks.


BIAB 2012.5 (upgraded from 2006), Windows 7 64-bit.
Guitarist and Worship Leader from Townsville, Australia