Install the Script Extender if you don't have it already. (Place DXGI.dll in the editor folder) Download the DivinityEngine2Patcher zip and extract it to the editor folder (The Divinity Engine 2\DefEd ...
On my current modded playthrough of DOS2, I noticed that most spells that effected surfaces stopped functioning at a certain point. I didn't really notice until much later in the game, so I don't know ...