The crash in both cases is definitely caused by adoption, it's looking like a custom trait exclusive to Ikana generals that tedster added into the game might be incorrect, although I don't see anything wrong with his script. As an experiment, find this file in the game: export_descr_character_traits.txt
search for this block of script:
Code:
Trigger OfferedForAdoption_Faction_Ikana1
WhenToTest OfferedForAdoption
Condition CharFactionType ikana
Affects IsIkana 1 Chance 100
Affects FactionIkana 100
Affects BattleDread 1 30
Affects Stoic 1 45
Affects StrongFaith 1 25
and try deleting it and then starting a new game.
EDIT: Ahhh yeup, Tedster's script is wrong. This line right here is the problem:
Affects IsIkana 1 Chance 100
Change it to
Affects IsIkanian 1 Chance 100
Nice catch, it will be fixed in the next version.