[Admins]

You are not supposed to update a full gmap, when you update map parts (nw levels) then the parts are updated automatically and you can also go on client and do update level to update the map parts. You only need to update the full gmap for changing the size or terrain parameters (which can be easier tested offline though).
The problem with crashing on gmap-update was fixed on Zone, will check if I forgot to upload the fix to the other machines.