I wanted to take care of an old unfinished WAD but it shows several errors, I can't even test it, it always shows a different error.
I would like to know what I must change in the WAD since this is Zandronum, and if there is already a threat about that then link me to

And, the programs I use are Doom Builder 1 and SlumpED.
Thank you C:
HellRear ~