Thank you, I'll try out delaying the start and hunting for anything that may be using the midi port before it launches.

See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.NullReferenceException: Object reference not set to an instance of an object. at PureMidi.Monitor.Monitor.checkBoxLogToWindow_CheckedChange...

Hi all! I am getting an 'Unhandled exception error' when running MidiKey2Key, but only sometimes. When I trigger the app to run either on Windows startup, or using task scheduler to have it open on system unlock, it throws the error. When I start the app manually, it usually works at least on the se...