If your mod is crashing and you want to ask the community for some help to sort out your problem, here are the things that you should first.
1. If you haven't created a shortcut to the exe, do so.
2. Edit the properties in the target line of the shortcut appropriately. For example:
These are three most relevant additions to the shortcut that you'll be using. They can all be used together if need be but make sure you have entered them correctly.
"blahblah/homeworld2.exe" -mod NameOfTheBigFile.big
-luatrace - generates the hw2.log file in the bin/release folder. This file is the most important for helping and assisting for debugging, crashes or other mod related problems.
-overrideBigFile - If you are trying to run a mod that uses folders and files, this is the extra command you need to use.
-mod NameOfBigFile.big - If the mod is using a single file in the form of a .big file, this is the command you need to use.
Now, before making a post on these forums about your mod crashing or whatnot you should have a look at the logfile generated yourself first. If you are still stumped, then by all means ask the community for help.