Ok, here's the topic in the mapping help forum

cargotruck1.wad problem

As it says there... NOTHING I've tried (or even has been suggested to me) has worked... I was hoping a Dev or someone could tell me... please???

What does it do if you just feed it a cargotruck1.wad that contains nothing at all(empty wads can be created easily with a program such as wally)?

Are you having this problem with a map or with everything you try to compile?