Loosing MIDI (FIXED)

So in this case, external MIDI out failed when starting to play after seeking to a marker. Is there any consistency in whether the failure comes when starting to play after seeking, or when starting to play at all, or does the failure sometimes occur in the middle of playback?

And now, just right now, MIDI dropped out in the middle of playing. No edits were done since I restarted/reloaded, no menus, nothing, I only pressed play. Happened at the second half of the project, seems it only(?) does that for me. I have not tried to open the preferences yet, but I suspect this will result in guru meditation... EDIT: The strange thing I see now is that when I press play and stop, the LEDs on the MidiSport 2x2 (2 in, 2 out) blinks for Out-A, but not for Out-B. I assume this is all notes off, but it's only sent on one output, Out-A, and not on the one that the MIDI track is set up to use, Out-B. Nothing comes out on Out-B. Setting the MIDI track to output on Out-A, stuff comes out, the LED flashes.

Are there any tempo changes in this project?

So, using the Task Manager I killed the Reaper task earlier when it froze on me. But I did not look carefully enough... I restarted Reaper and have had no problems for a long time now, no loss of ext MIDI. When shutting down the DAW laptop, I now see that the old Reaper process was not killed when I killed the task. It has been chugging along at 50% CPU all the time, doing whatever it was doing, while the new Reaper task served me fine. Maybe another piece to the puzzle...

Losing MIDI 

Schwa, I've had the problem happen during recording when fiddling with an external device that is receiving MIDI. I use a program called Chaingang which receives MTC and plays synced video. I tried closing down chaingang whilst freezing tracks, to free up some CPU and the MIDI stopped. I haven't tried the going to MIDI preferences trick that Fabian suggested yet, I'll try that tonight. You should be able to replicate this problem if you set-up an external midi via MIDI Yoke ... in fact have lots of the Virtual MIDI cables enabled in MIDI Devices including inputs monitor the MIDI Yoke channels in something like bidule or MIDIOX (if you can figure it out, which I haven't) Do lots of tracking with the transport, move back and forwards try scrubbing and stuff like that you should eventually see it happen! Stu

Would trouble-havers mind testnig the latest 3.01 prerelease build () to see if there is any improvement? Thanks.