And the max poly count is 655xx something for all lods together, or if you want 655xx for lod1. So no, thats not the problem

Have you replaced the old model only or have you scripted and placed a new one?
Does it load the game to 100%? if not 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
