A quick listing of possible problems:
at what percent does it CTD. It can give you a hint of whats wrong, but not all errors are in the list im afraid, it havent helped me so much yet but maybe it does for you?
1. 0-5% - smth. wrong with mission script, unit name is not compatible with trigger parameters.
2. 1-4% - polygon is absent
3. 7% 7% - no track in common_res
4. 9% - errors *.engcfg, connected with places and cocpit
5. 10% - there's no caterpillar in the common_unit file
6. 17% - variable of tank in the common_units is wrong, look for the mistake in the file ***.engcfg, i.e. kv1b()
7. 18-19% - no *.go file
8. 20-21% - smth. wrong with ***zones.engcfg
9. 92% - don't use a big letters in the name of units, i.e. ? USR, TNK etc.
10. 97% - cockpit file is absent
11. 98% - common units/res out
12. 99% - smth. wrong with weather, check was it correctly written in the file ***.level
13. "
" in the editor, check {} in the name of units, file ***.text, mistake is ()
Credits go to lockie for that one, Atleast it was from him i got it