Nothing to do with EQ2Map... you need to update your EQ2 Launcher you're using an out dated version. They announced this a week ago (see our front page news).
if you just point the new launcher to where you have eq2 already installed all it will do is update the files and you can then launch eq2 with the new launcher,if you have already used eq2maps before you wont need to do anything at all as the path hasn't been changed .