Map editor problem

[markfamily]

Hi was wondering if someone could help.
Had a go at editing a map using the updated campaign editor, edited zanfas's challenge as I like xl maps but when I try to play the map it says it is bad and will not load so was wondering if I can do anything as I spent 6 hours on it and do not want to lose it all or start again for the same thing to happen
many thanks for any help

[ByteBandit]

Which Updated campaign editor did you use?