Romantique,
I’ve updated both the correct editor and S90ES OS updates. I’m not sure how to tell that everything is working properly with my system, but when I activate the stand alone version of Studio Manager, I get the set-up window where I select workspace, MIDI, and preference settings. However, after making these selections, and when I hit OK, I get an error message window that says “Following components could not be loaded. Please ensure that you have installed required components correctly. S90ES (Voice)”. Is this an indication that something might not be compatible with OS High Sierra?