I edited a map just to play for my self XD I used the model from shipudden destiny 2.0 and place it into another map. After transfering and editing certain things it went out find. I can place the hero in the world editor. I mean i can see the model and icon from world editor. But once i start the game it turns out to be black in colour. Icons are there but just the hero is invincible.. I need to use hotkeys like F1 F2 F3 F4 to gain control of them..
it has something to do with the original model not being properly imported to your map, and/or it got corrupted. This was just answered a few days ago, so I am sure if you search you will find it, that, or the same person will answer it for you hopefully.