Midi Device Cannot be Opened

[oxxi]

I'm having an issue with modplug not working with my Oplab midi device. I get the following error: MidiInWinMM :: openPort : error creating Windows MM Midi input port. I have restarted my computer and Oplab as well and I still get the error. At least modplug recognizes the Oplab but I'm not sure what else to try to make it work. I didn't have this problem before.

[Saga Musix]

In 99% of all cases this means that another application is already using the device.