They keep throwing up "missing" machines for some reason, even though I have the machines installed (in the MDB folder).
Does anyone know what's causing this, and possibly how to fix it?

Copying all the machines from the MDB folder into the Program files buzz Gear folders didn't help either.
I tried this as I figured maybe Buzz expects the machines to be at a specific path.
Creating a new BMX with the same machines does work. When I load it after restarting buzz the machines aren't missing.
So my other guess is that perhaps the versions of the machines don't match?
I don't know if I can check which version is expected and see which one I have installed.
Any help is greatly appreciated. This is basically rendering all my old buzz tunes unavailable because I tend to use the same machines a lot (analog distortion is one of my favs for example).