Clean Plate Not Working

I am trying to use Clean Plate with Delta Keyer, but no matter what footage I use, as soon as I add in the Clean Plate, I cannot see anything. Has anyone else seen this before?

Hey

I don't have time at all now, but your post saddened me ... I have to help.

So, you don't use the cleanplate the way it must be : read the manual, watch tutorials etc, but learn how to use it properly first...

Tip : from your video, output 2 parallel strings : one to the delta keyer, the other one to the clean plate; then pipe the cleanplate output into the pink input of the delta keyer.
Now looking at the DK node in the viewport, use all the functions (that you learned !) of the DK parameters to fill the view with green (= wipe out the girl)
Then go and work in the DK node...

This is a reaaaaally quick view huh, finesse would require more...