So I just put Antares' Big Mod 6.0 in my load order. When I went to start a new game, I get the following errors.

Unable to find referenced object "Angahran" in script GM_moragtong.
Unable to find referenced object "Angahran" in script PP_moragtong_script.

I checked the scripts in question and they both looked fine to me, so I have no idea why Morrowind is complaining.