Warcraft III Burn - Does not run World Editor

[Sedmire]

My backup of Warcraft III does not allow me to use the World Editor, rendering this copy useless at long LAN parties, where I enjoy to work with the editor to make maps to play later on.
Am I doing something wrong? Can I get around this any other way?
I can play the game, without a No-CD crack just fine using this copy, but it still asks me for a CD when I try to run the World Editor.