I installed the latest Windows build (r8494), and it still crashes when I close a file. Worse, the sound is totally messed up. And these files have plain PCM sound!
Try current r8524
Since 8524 is no longer available, and there is a post warning about not upgrading after the nightly for the 13th, I tried r8542 which is still present for downloading.
It won't run at all. When I try, I can see in Process Explorer that it actually momentarily causes WerFault.exe to run, which I take it is a crash.
r8561 (64-bit) was able to run.
Sound is still messed up.
Plain stereo or downmixed multi channel ?
You might want to try 8578 in a separate folder