I just did a fresh install and it puts the file with the X there.
Look in your [EQ2]/UI/[UI_FOLDER]/Images/icons/ folder for the file icon_eq2map.dds. Open this file and see if it had 3 X's in the middle of the image. If not rename the file and run eq2map updater and this should fix your issue. If not IDK.
(moved this post here from another thread where I believe you posted it by mistake - if not, my apologies, I can always move it back. -gm9) 