Add Map does nothing

Hi folks,

I'd really like to use this plug-in, so I hope you can help me out.

When I hit the "Add Map" icon, I get the pop-up but none of the buttons do anything. I'll attach a screenshot. It shows what I see after I click the "Add", "Drop Marker" and "Map Options" buttons.

Now matter what I press, I get nothing. Even "Go back" gives me a blank stare.