Midi Record Button disables itself

[Bounder]

When i press the Midi Record Button the OpenMPT Setup Screen appears with the MIDI Tab selected. If i press ok the midi record Button disables itself. But it want it to be enabled.

[Saga Musix]

You have to choose a valid MIDI input device from the MIDI setup, or else you can't enable MIDI input. If the MIDI device is already in use, you may also not be able to enable MIDI record.
I'm not sure if you mean that you just can't enable MIDI record at all, but if you mean that the MIDI record button is still disabled after selecting a valid MIDI device from the MIDI setup screen, this will be changed in the upcoming version of OpenMPT to be more user-friendly.