Are you using Virtual Clone Drive or Daemon Tools?
Somehow for me it is not working anymore.
It looks like MediaPortal is sending the wrong commandline to the vcdmount.exe in the RC release.
Here are my settings:
That was the key. Somehow I was using the wrong exe (vcdmount.exe)....C:\program files\VirtualCloneDrive\daemon.exe
That was the key. Somehow I was using the wrong exe (vcdmount.exe)....C:\program files\VirtualCloneDrive\daemon.exe