I'm having exactly the same problem.
Indeed, if I unfreeze all the tracks, it works.

But, listen, I did patiently put all the songs each in a different directory and did build a list (of one song) in each of those : then IT WORKS, no "Access violation at address 00A10942 in module 'bbw.exe". Read of address 00000348 at: 00A10942".

And then, I make another directory where I add all songs one by one and try to rebuild the song list each time I just added one... : it works until a certain number of songs (varies). It is always a "frozen track" song that makes it "access violation", BUT, nothing to do with the song, because if I try adding it "earlier" in my list, that same song didn't create a problem...

I'm running BIAB on my desktop and my laptop, both under Windows 7, 64 bit. IT WORKS ON MY LAPTOP ! So my solution is that I build my songs on the desktop, copy them on the laptop and build the list there. I then copy the SongListTemp4.BIN on the desktop (exactly same disk and directory...) and it works.

I already had it on BIAB 2010... 2011 didn't fix it and 2011.5 neither...

I'm turning nuts... I give it up. Over to you guys...

Kind regards from Belgium,

Yvan