Puzzling situation. I broke down my studio for a move, and after re-connecting everything (and not changing anything), I am completely unable to get MIDI input in METRO from any connected devices. Running 6.4.5 on an Intel iMac, OSX 10.5.8.
For example: I connect my Virus as a controller to my MT4 MIDI interface. Set up the Virus connections on Audio/MIDI Setup.
Play the keyboard and MIDI In indicates on the MT4. However no MIDI data is recorded in Metro, despite the VIRUS Port being selected. I have also tried Input "All" and that doesn't work either. Automatic MIDI Thru is also selected in the "Switches" menu.
MIDI playback of step-sequenced data within Metro works fine, and also triggers the Virus. So MIDI output is fine. Also connected the VIRUS directly to another MIDI device and it worked fine as a controller, so no problem there or in the MIDI cable.
So I've either got a problem with MIDI input of some sort in METRO, or the MT4 is receiving MIDI data but somehow not sending it on, which seems unlikely... any ideas?