Find Image on Screen (from file) not working?

OK, obviously I'm doing something wrong here. I have a "Find Image on Screen" action with a pasted-in image, and it works fine.


I copied the image to the clipboard, pasted it into GIMP, and exported it as a .png file (I tried .jpg also).

Then I replaced the "Find Image on Screen" action with one that gets it from a file:


It doesn't work (it doesn't find the image on the screen). Anyone know what I'm doing wrong? Thanks.

Here's what I ended up doing:

I copied the image from the image well, then used the KM command to save the clipboard to a PNG file. Then I used that file for the image file, and it worked.