Can you start the mod with the command line

-luatrace

(With the -)

Then when it crashes, go to the folder \Homeworld\Bin\Release\, open the HWRM.log file with Notepad and paste here the last ten or so lines? These should give me a clue what's happening.

Hi Rufus, thanks for your response!

The last few paragraphs from the log:

EngineTrailStatic::getTweaks requesing index(0) that doesn't exist.
EngineTrailStatic::getTweaks requesing index(1) that doesn't exist.
EngineTrailStatic::getTweaks requesing index(2) that doesn't exist.
EngineTrailStatic::getTweaks requesing index(3) that doesn't exist.
could not find family Sensors_Ubw, All family names should be defined in data\scripts\FamilyList.lua.

Check that any families you've assigned to ships / subsystems / resources are defined in this lua file.
could not find family Sensors_Ubw, All family names should be defined in data\scripts\FamilyList.lua.

Check that any families you've assigned to ships / subsystems / resources are defined in this lua file.
EngineTrailStatic::getTweaks requesing index(0) that doesn't exist.
EngineTrailStatic::getTweaks requesing index(1) that doesn't exist.
Error: could not find static data for build data (Kl2_end_run_Drakhri) -- FATAL EXIT -- builddata/176:! --stack trace--
Restoring video mode
Display: (0, 0, 100, 100) - (11, 45)

OK, so you were trying to play with the WC 1/2 factions. For these to load properly, you need to have this mod activated as well as the normal one: https://steamcommunity.com/sharedfiles/filedetails/?id=1177490387

I had to split the mod into two parts because it was too large for the workshop to handle properly.