hmmm... I truly enjoyed Chapter 1, and the first mission of this COTS I was able to play before I was booted out of FS2 due to some missing ship... unfortunately none of my debug builds actually start up the mod beyond the pilot selection, so this is all I can add from the very first debug messages (3.6.10 rc2 + 3):
Warning: Primary bank capacities have not been completely specified for ship class GTF Valkyrie MK2... fix this!!
File: Ship.cpp
Line: 3866
Call stack:
------------------------------------------------------------------
parse_ship() parse_shiptbl() ship_init() game_init() game_main() WinMain() WinMainCRTStartup() kernel32.dll 7c816fd7()
------------------------------------------------------------------
Warning: Unable to find WEAPON_LIST_TYPE string "Pirahna"
in ship: GTB Medusa's default secondary banks.
File: PARSELO.CPP
Line: 2525
Call stack:
------------------------------------------------------------------
parse_ship_values() parse_ship() parse_shiptbl() ship_init() game_init() game_main() WinMain() WinMainCRTStartup() kernel32.dll 7c816fd7()
------------------------------------------------------------------
Warning: GTB Medusa has no secondary weapons, this cannot be!
File: Ship.cpp
Line: 3971
Call stack:
------------------------------------------------------------------
parse_ship() parse_shiptbl() ship_init() game_init() game_main() WinMain() WinMainCRTStartup() kernel32.dll 7c816fd7()
------------------------------------------------------------------
Warning: Unable to find WEAPON_LIST_TYPE string "Mekhu HL-7R"
in ship: GTTB Armageddon's default primary banks.
File: PARSELO.CPP
Line: 2525
Call stack:
------------------------------------------------------------------
parse_ship_values() parse_ship() parse_shiptbl() ship_init() game_init() game_main() WinMain() WinMainCRTStartup() kernel32.dll 7c816fd7()
------------------------------------------------------------------
That last WEAPON_LIST_TYPE string message was followed by many more weapons from your mod, I only posted the first call here.
something else, from your cotsfix file, there are two stray dds, the raven and the crusader, I presume those go into the maps folder with the others? if you simply extract it without knowing about FS2 mod files, those will end up alone in the DATA folder :-) just mentioning that as there are certainly many who are not as savvy when it comes to what-goes-where