Quote Originally Posted by Zaleukos
Deleting the world\maps\base\map.rwm (recompiled upon restart) seems to do the trick, at least for restarted campaigns. I guess that the map file is saved together with the savegame and that is the reason that the addition of new hidden resources wont show in the save game.
I had a big problem with that file too a while back, just remember to always delete it whenever you create a new resource.