I am attempting to add custom taxiway markings with ADE's custom ground polygon tool. I've followed the instructions for texture management, placed the texture in texture_def.txt, and inside the actual textures folder. The ground poly is not showing up, however, once I load up FSX. When examining my own texture and comparing it to the ones that come with ADE, I see there is a difference in formatting, even though both appear to be BMPs. This is a screenshot comparing the stock texture to my own:
Anybody know what kind of format that is on the left or what steps to take to get there?
Edit: Just to be clear, the screenshot above is of the original PSD, but the texture in the ADE folder is an exported, flattened BMP.