TESTING OPEN TIMES:
COLD:
Time to open AudioUnit: 74.595 ms
WARM:
Time to open AudioUnit: 13.418 ms
FIRST TIME:
FATAL ERROR: Initialize: result: -10875
Is it possible that the AUwrapper does not work with a single component plugin?
I’m out of ideas. You have to debug to see where things went wrong. If you are able to debug, place a breakpoint in AUWrapper::initialize and check that it runs thru it without returning an error code.
I always copy&rename VST3 to the resources. And I did successfully compilation of AUwrapper v2 about month ago (but SDK 2018, only for x86_64 architecture)
@MarkusK1 I do not know if that can help but one thing you could try is go to Web - Jamba and generate a blank plugin. Then try to generate the Audio Unit and see if that works. (configure the project and provide the path to your SDK installation (--vst3 option) and run jamba.sh install-au).
I am not saying you should use Jamba for your project, I am just saying that as far as I know I have updated Jamba to work with M1 and I tested on my MacBook Air with Garage band and the plugin was working fine. If this test works it means there must be something wrong with your setup/toolchain.