My plugin doesn’t seem to be receiving MIDI input when running as an AU (tried in Logic/Live & AULab).
The plugin is simply based on a modified version of the DemoJuceFilter. Pressing the virtual keyboard does work. A VST build of the plugin works fine too (Live).
Might this have something to do with the new SDK in Leopard? I had to change something in juce_AudioUnitWrapper.cpp as you might remember. Also I had to fix a namespace problem (uint8 -> juce::uint8 and uint32 -> juce:uint32 in the wrapper code).