I made another thread in the Korg forums with the same question, but it's a bit slow there and maybe I could find some help here since Ableton is half the setup here.
I'm having issues with controlling my Radias with Ableton. The biggest problem is that, while the presets and other patches I've downloaded play notes fine, most patch I've made myself doesn't make a sound when there's incoming midi. There is one original patch I made that works, but I can't spot any differences between it and other patches that would adhere to midi data. My global midi stuff all seems to match, I just have no idea why the presets work but my own sounds, including empty patches (just a saw with nothing else), do not.
Edit: I've actually realized that not all presets respond to midi data either. The one I noticed was A03: "Tronik Sign."
Edit 2: Okay, so I figured out the reason A01 is missing the vocoder part and A03 doesn't play is because I set the midi clock to external. Is there no way to have the stuff sequenced in the Radias while the midi clock is external? Arpeggiations seem to work fine, it's just the mod sequencer that gets messed up.