[XenonSurf]

Is your game located in an unprotected folder, all without write-protection?


Then if it mentions the recmanual, I guess (I don't know) it must be the original one, not a modded one. And the same for other files: editor must read the original ones, not modded ones. Try to use the editor with the game v. 1.2.0 only - and without TDW Generic Patcher applied: If you were so good to make backup files of the TDW Patcher like described in the Tutorial #2, then remove all mods and copy these backup files in your game directory which should transform your install in v.1.2.0. Then start Editor and see. (If you are using TWoS you would have to re-install game to put it back to v.1.2.0).
And as said: I don't know if that's the reason...