I've created a new empty level and I didnīt get the "no to all" error after adding both wads. Maybe the other level file had some kind of issue. So I will work over the new level and I will post here if I get the error again when the level has some blocks placed.
Last edited by painkiller; 08/24/1610:35.
3D Gamestudio A8 Pro AMD FX 8350 4.00 Ghz 16GB RAM Gigabyte GeForce GTX 960 4GB