@d-healey
I did use v2.1.0 that compiled by myself.
that source code from @Lindon reply.

I tried compile "BasicSynth" (from hise_tutorial ) Xcode don't said same errors.
But Xcode says another issues:
361a7a6f-9967-432a-a7ec-c3e8a38408e3-image.png

I think this is just not declared in this source code.
Anyway, I'll study more.

Thanks for good guys.