Flip transition blacks out background
I've got a background image in my main storyline (for the record, it's "Arcs" from the generators library), and I'm trying to string three images together on top of it (floating, like you'd see in a newscast or something), connected by the "flip" transition. So far so good, except during the flip transition, the background disappears and just goes black!
MacBook Pro, OS X Mavericks (10.9.4), 500GB Hard Drive