There's a bug in one of the EQ2MAP files that causes this. Until the fix is available via the updater you can use this file and drop it into your UI\CustomUI\EQ2MAP folder (it will be overwritten each time you update though, with the new versions of the updater you can make it read-only to prevent that - just don't forget to make it overwritable again once it's fixed on the updater).
EDIT: Ignore the above, the fix should now be available via the EQ2MAP updater.