Localize your map.
If you map isn't localized for the users client, it might show up some important stuff on UI as "PARAM/VALUE/#HEX#/", Tooltips,Hints,etc. aren't displaying correctly or they are blank
r14 finally fixed the bug which caused it not to work for people.
Quote from Ladik001:
Me and xhatix found the problem and I made special build of MPQ Editor for allowing SC2 Localize users to work. Unfortunately, I am in the middle of some changes in MPQ Editor's GUI, namely the behavior of "Open" and "Open With", so I cannot make a full working release version. It will be available as soon as I complete the above mentioned changes.
Your localizer does not seem to work with my map. I use it (r18), and nothing changes about the map. The size stays the same, all files in it remain unchanged, not even the "Last edited" date changes. Basically, the localizer does nothing but create a backup for me.