hmmm... it seems i might have solved the problem with my 1.2 version of the mod.
i had turned on "headshot always kills" and "always critical" in the difficulty menues and now that i have turned them off the game havent crashed (altho i still havent played the map that crashed last time. the one in n-britain with the scientist in the cellar. it crashes when the door blows up)
if this version works i might be releasing the "final" version soon.
i say final only because i still want to change the weapons data. but i cant right now. too complex for mee... but i might set myself into that during the winter holidays.