Polygon Grabber refusing to work

[Trig Mabrey]

I've been messing around with making a map, and I can't get the polygon grabber to do anything. No territories are working.
Any troubleshooting tips?
I've got only black and white, and antialiasing should be off.

Here's my map for reference.

[Panther]

@trig-mabrey

Can it be that your "white" is actually 100% transparency? I use a dark setting for this forum, and all I see from your image are black borders on a (near) black background. When I use a light setting I see your territories, but only because of the forum's white background.

[Trig Mabrey]

@panther Interesting! I'll check that.