Thats what happens when disabled icons dont import correctly. Fist thing you do is check the file paths to make sure it is correct. Disabled icons have different paths then normal icons.
Although sometimes it happens even when file paths are correct. One way to fix that is to import your icons with the name and filepaths of an already existing icon, say, a knight or something, so it automatically replaces it with the new icon when the map starts....it's never gone green on me when I do that. -VGsatomi
every icon that u download from this site should come with a DISBTN version, a blackened icon with no iron border. what you do is import normal icons to ReplaceableTextures\CommandButtons\ and DISBTN icons to ReplaceableTextures\CommandButtonsDisabled\
if you follow this link and you go to 'how to import icon' and you followed the instructions correctly you shouldnt have any problems with that anymore.
From a bad situation to worse. Just joking, but next time (when you post in the correct section) make sure you check the stickies in that section. Just an advice...