Can you post an screendump of the timeline, effect controls and program window with the clip selected?
Can't figure out why it does not work
Did you nest the mask or something?
Try a solid color for the mask and add the feather on the mask with Fast Blur.
By the way get your project off the C drive, get an additional hard drive.
The mask is not nested. I tried a solid color, and that sort of worked. I then nested the man's face and the luma jpg image and that worked for creating the track matte, but I couldn't animate scaling and positioning of the man's face. The track matte seemed to be attached to it. So then, I just rendered the man's face and the scaling animation, and brought that in to be used with my jpg for the track matte, and I was back to square one! Like originally my problem, the track matte didn't apply based on it's luminosity, but seemingly on the man's face track.
I'm stumped. Thanks for following up.