Curiosity killed the mix. He loaded the patch. No sound. Just a waveform image in the sampler that looked like a spectrogram of a face. A face with a date stamped on the forehead: .
Beyond Alchemy, 10.2.2 introduced several quality-of-life changes that are standard today but were revolutionary at the time: Logic Pro X 10.2.2 Dmg
sudo spctl --master-disable
Some older 32-bit plugins (bridged) or specific VST/AU versions behave more predictably on 10.2.2 than on the Silicon-optimized versions of today. Logic Pro X 10