Hey!
I just noticed that the MM commands only work, if MM was started by VC, but if it is started manually or by EG. I use VC 2.1.0.3 (I finally updated, yay ) with the standard MM configuration.
I guess it is a problem with my configuration of MM, because i have the same problem with my EG commands if I don't start MM with EG...
Any ideas? (Or workarounds, if it's a known problem?)

It is not a known problem. If MM is started by another program it should still work fine, sometimes the first command sent won't work but it should automatically connect after that.

I have basically given up on the MM plugin for EventGhost because it never seems to work for long, but with VoxCommando I have no problem.

Maybe MM just doesn't like having multiple clients connected.

The only times I've had problems with MediaMonkey related to UAC / admin rights.