I don't know if this is something unique to my Mac or what, but I am getting a glitch in the AP Adjustment Studio panel if I toggle off or on "Monochromatic Iconography" while a document is open.
If I do that, I cannot open any of the adjustment categories in that panel unless I select "Rasterize" or "Rasterize & Trim" for some layer. Any layer will do, including those that are already pixel (not image) layers.
If I toggle "Monochromatic Iconography" on or off while no document is open, there is no problem.