Track Matte makes my video disappear
Windows 10, Premiere Pro CC. I've been using the same file and process to make my facecam fill a png for my gaming videos, only now when I use it, the facecam disappears as I play the video. It shows up - in the track matte - when not playing, but the second I hit play it disappears. I've tried making the facecam and matte a subsequence, and that disappears as well.

