Holy mother of my sanity!

This is driving me absolutely crazy! I can’t figure this out for the life of me!

I know it’s a simple solution, but I can’t find it to save my life! I’m going crazy here… I’ve been trying to solve it for hours!

Anyways, I have a very very very simple animation and I want to create a “shine” effect in the middle (frame 484) between the growing and the shrinking. So I created a mask and a shine gradient and the mask is supposed to mask the gradient to make it shine, but it doesn’t work! I’ve tried many many things and can’t seem to get it to work.

It works fine if I paint a new mask, but that’s not the right shape. I don’t understand why this one isn’t working. I’ve tried breaking the symbols apart, but that doesn’t work either. I’ve tried changing the line thickness… I’ve tried changing the line type… Nothing!

anyone, someone! Please. I don’t understand why it’s not working!