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Old 08-31-2016, 09:45 PM   #1
Grimulkan
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Default Crash when overdubbing multiple pooled MIDI items (FIXED)

Update: Appears fixed in 5.24c2! Thanks.

Here is how to replicate the issue. I've included a sample Reaper project that can be used instead of Steps 1-6.
1. Create a new project & a new track.
2. Set input to any MIDI input (egs., Virtual MIDI keyboard).
3. Set recording mode to MIDI Overdub. Monitoring setting doesn't matter.
4. This will make Step 5 easier: Preferences -> Media -> MIDI -> Enable "Pool MIDI source data when pasting..."
5. Create an empty 4-bar MIDI item on the track and duplicate it 20+ times (CTRL+D). The copies will be linked since pooling is enabled.
5. Create a time selection encompassing all the above items & enable looping on the transport. This is just so we can run the test for a while if we need to.
6. Arm the track for recording.
7. Hit record on the transport.
8. Let it run for a few minutes = Reaper frozen forever

How long one has to wait before the crash seems random. Sometimes 5 seconds, sometimes 2 minutes. I replicated this on two different Windows 10 x64 machines: one studio machine running Reaper 5.23 and another "bare bones" machine that has barely any software (other than OS & Reaper 5.1.8). Here is a freeze that occurred in < 10 seconds:

Reaper froze & I had to manually terminate the process after this. Because of that, no exception code or fault offset was created in the Windows Event Viewer log, only a message: "The program reaper.exe version 5.1.8.0 stopped interacting with Windows and was closed". I've replicated this on Reaper 5.23 as well.

There is probably a simpler set of steps that can reliably trigger the crash but I haven't figured it out yet.

Anyone else experience something like this? Any tips or workarounds? I'd be really glad to know if someone else can replicate it.
Attached Files
File Type: rpp test.rpp (15.6 KB, 28 views)

Last edited by Grimulkan; 09-01-2016 at 07:25 PM. Reason: Discovered LICEcap & added clarification
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Old 08-31-2016, 10:03 PM   #2
cfillion
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It doesn't crash here but it freezes (OS X): https://i.imgur.com/gR3msHy.png

Spindump: http://sprunge.us/AhGg

Last edited by cfillion; 08-31-2016 at 10:14 PM.
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Old 08-31-2016, 10:14 PM   #3
Grimulkan
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Thanks for checking! Strange, yet perhaps that is the way OSX deals with it. On Windows it doesn't really crash - just goes into an infinite "not responding" loop. Sorry, should have clarified. Edit: Clarified in main post, but didn't want to say "freeze" in the title since it is a technical term in Reaper.

Can you still use Reaper without restarting after the mysterious gray block appears?

Last edited by Grimulkan; 08-31-2016 at 10:49 PM.
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Old 08-31-2016, 11:58 PM   #4
cfillion
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Quote:
Originally Posted by Grimulkan View Post
Can you still use Reaper without restarting after the mysterious gray block appears?
No, it's completely stuck. I guess that gray thing is just a side effect.
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Old 09-01-2016, 07:25 AM   #5
Justin
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Got it, thanks, fixing!
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