I didn't make it!
I'm having problems, too.
I've just tried the Worldbuilder on Opposing Fronts for the first time. The WB will not create new maps. It opens, and when I click on the new single or mulitplayer maps, it opens a window that is meant to find and open an existing map. It doesn't go to the screen that allows you to set the parameters to set up a new map. I've had a look on other forums, and it looks like there are problems with the WB. Anyone know what I can do to use the WB, please?
I've managed to open the WB before but that was a while ago, on an old pc with the original CoH.