Hmm... I just got Zdoom again for the first time in 2 years!

But my Zdoom launcher doesn't play the levels I put in the "Use costum Pwad" thing. Even when the box is checked. Also, when i try to use the Map/Changemap thing in Zdoom to play a custom .WAD map, no matter what i type it always comes up with "No map <name i typed>" Or whatever. Suggestions anyone? :/