Warcraft 3 Custom Games Downloading Problems?

I've file downloaded World of Warcraft RPG and then the the world editor thing pops up. The editor finishes loading the game but then after 3 seconds, this thing pops up saying "cannot find trigger" or something like that. Sometimes it says "Not enough space" or i think there was this one time it said "error". Some of them work when i get past the world editor thing but most of the time it doesn't. Please help! Thanks|||Think that the map is protected.