Help with map generation!

Just installed WOG! Tried to generate a map, but a window popped up with the message "STRING WAS NOT FOUND," with two large icons in the shape of gold bars (but gray) above it, and a button (with a checkmark) below the message that cannot be clicked! I waited a couple of minutes, but it seems the loading process wasn't continuing! Please help! Thank you in advance! Just discovered a new aspect of the problem!!! Tried to load a simple map, and the same message popped up, so the problem isn't with the map generation, but with something else! HEEEELP!