Hello Daniel,

I tried running Composer using the MidiDev.cfg you sent me, but Composer didn't complain or crash. Composer's MIDI Device Configuration window shows evidence of your configuration, such as the Turtle Beach USB MIDI 1x1.

I'd appreciate your trying it again. Rename your now good MidiDev.cfg to, say, MidiDev.bk2; and rename your MidiDev.bak back to MidiDev.cfg. Does Composer crash again when you try to now run it?

Of course, if it does, restore your MidiDev.bk2 back to MidiDev.cfg.

Thanks for your investigation.

Cheers
-- Mark