EditorDataPath and GameDataPath should be set to [steam install path]\SteamApps\common\Divinity - Original Sin\Data\ I believe. At least that's how it agreed to start up for me. I've got TextureAtlasIconPath as blank for now.

Edit: Referring to the post 2 below:
EditorDataPath: [steam install path]\SteamApps\common\Divinity - Original Sin\Data\Editor\
GameDataPath[steam install path]\SteamApps\common\Divinity - Original Sin\Data\

Last edited by Rane; 30/06/14 06:42 PM.