Mac OS High Sierra 10.13
latest version of After Effects 15.0.0
I can't drop down the inner drop down menus on the timeline. For example, changing a matte from ADD to SUBTRACT. They won't work. Nor will RIGHT Clicking any menu. This works in the latest Premiere software.. I tried restarting multiple times, and switching mouses. Nothing works.
I'm freelancing at a facility that has Adobe CC, so I'm not fully in charge of my world.
Can anyone help?