Kvothe., on 16 Mar 2017 - 18:01, said:
Okay I just noticed that my NearInfinity wasnt up to date.
I got a couple of crashes now and can confirm that they are caused by the german "Umlaute"(äöü...).
NPCFlirt pack strings do look like this :"this Jaheira hat sich dir gen�hert... nahe genug, um die komplizierte".
The recent crashes were caused by the banter pack mod 
Interesting. I just edited one string via NI for further tests and did overwrite my dialog.tlk. This apparently fixed the whole issue in a way that those
Umlaute are still displayed in a wrong way but at least are displayed ingame instead of causing the game to immediately crash.
Did you check whether changing the game language in-game helps?
It is quite cumbersome to repair all these entries with NI (even if possible).
Otherwise the only thing that comes to my mind is disabling the banters. This looks like a switch-off to me:
SetGlobal("FWDisableFlirts","Global",1)
Maybe BWFixpack could add HANDLE_CHARSETS. A report to the mod's forum should as well be made.