RAWR522'S PROFILE

I used to play with rm2k3 all the time years ago. Now I am building a map in it to use with roll20 for a dnd campaign! It seemed great, but I cant get this addon to function to export my map to a BMP. I put it in my project folder, use the index number of my map, and it keeps creating a completely black BMP instead of my map! Does anyone have any experience with this addon? Its driving me nuts.