Midiflow Crashing with Virtual Inputs

Need help with Midiflow? Ask here!
Post Reply
Posts: 7
Joined: Sat Apr 18, 2020 2:42 am

Midiflow Crashing with Virtual Inputs

Post by Mof » Tue Feb 23, 2021 1:31 pm


Just installed the new 2.2.18 version of Midiflow hoping it would have a fix for the crashing I have started getting on iOS 14.4, but unfortunately it is still there. Upon further investigation, it seems to be a problem isolated to the use of Virtual Inputs.

Steps to Reproduce:

1. Install Midiflow fresh from the App Store and create a New Song.
2. Press the Plus Button
3. Create a new Virtual Input and call it "Test" and set it as the source.
4. Open AUM
5. Using the Midi Router, route a hardware Midi input to the Virtual Input "Test" created in Midiflow
6. Using a Midi Keyboard connected to the hardware Midi input, play some notes and while playing the notes move the modulation or pitchbend wheel
7. Midiflow will crash

Using the same procedure with the hardware input directly does not cause a problem. It would seem to be an issue is with the using Virtual Midi ports.

I have tried this on 2 different iOS devices (and iPad Air 3 and an iPhone SE 2020) and both produce the problem 100% of the time.

Until I upgraded to iOS14.4, I never had this problem.

Have tried the same steps with the same verisons on an iPhone 6 running ios 12.4.8 and it works perfectly fine and does not crash.

Haven't confirmed the crash log, but I expect it will the same as in the one I posted in https://support.midiflow.com/viewtopic.php?f=4&t=13621

Post Reply