I've used LD mixer a lot in the past and I noticed that all bmx's with this machine made Buzz crash on opening.
If I'm lucky I can delete it in the machine view before Buzz dies on me. But it usually takes a few tries before I get to remove it.
While trying to figure out what the problem was, I noticed that in the status bar an "access denied" error occurred on the Tick() method for the LD mixer.
Since access denied is usually a system rights issue, I tried running Buzz in administrator mode and behold! It bloody worked!
So apparenlty LD mixer is doing something windows isn't OK with anymore in Win 8 (and 7?) which makes buzz crash.
Just thought I'd share this one.