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Logic frozen when loading projects with multiple JUCE'd AUv3 instances

Audio Plugins
#1

Hi,

I found an issue that AUv3 plugin made with JUCE causes Logic Pro X frozen when save and load a project contains multiple plugin instances.

Condition:
An AUv3 plugin made with JUCE is installed. A simple plugin that is just built based on the template can reproduce the issue.
Mac OS X Catalina 10.15.7, Logic Pro X 10.6.1

Repro Steps:

  1. Launch Logic Pro X and create multiple software instrument tracks, load AUv3 synth instance for each. In my case, I created 7 tracks.
  2. Create MIDI region that contains some notes for each track.
  3. Save a project and close the project.
  4. Load the saved project.

Expected:

  • Load project successfully.

Actual:

  • Logic Pro X freezes, cursor goes to infinite rainbow. Plugin seems not loaded completely (the plugin name is grayed out). 100% repro.

This does not happen for non-v3 AU. Checked JUCE 6.0.0, 6.0.5, and latest develop build and all repro.

Not sure if this is caused by JUCE or Logic. Does anyone sees the same issue?

#2

Thanks for raising this. The issue should be resolved by this commit:

1 Like
#3

Thank you for fixing this quickly! I’ve verified the fix with my plugin.