Debugging AU's in High Sierra

It use to be that Mainstage/Logic would find and load AU’s in the user’s library folder, but it seems that’s not true in High Sierra.

I’m trying to debug an AU issue so I’ve set MainStage as the executive in my Xcode scheme, but because the AU is built to the user library, it doesn’t appear.

How is anyone else dealing with this?

did you try restarting your machine?
see this -

I didn’t try rebooting, but at some point I removed my plugin from the user library and they placed it back there by hand. Then it started working. Now I can compile and run MainStage and my newly built plugin in running in the debugger. Pretty odd. Maybe similar to the renaming hack.