I didn't make it!
I try adding a new unit to the game by copying and pasting an existing entry in the GroundInfantry.xml, and whenever I try to load the game, it tells me that the GroundInfantry.xml has syntax errors and could not be loaded. Can someone tell me what I did wrong there?
Edit: Nvm, I realized one of the end-tags were repeated.
Open it with "Internet Explorer" it will load up to the error, then flash an error code. It will give you a good idea where the error is.