I'd like to report a crash issue that is likely related to the following Tweaks Anthology components:
#4025 // Allow NPC pairs to separate: v8
#1075 // Send BioWare NPCs to an Inn (DavidW/Zed Nocear): v8
Steps to reproduce:
Full party of 6 (probably not strictly required).
Position both members of an NPC pairing in close proximity to CHARNAME.
Acquire a new party member (my case was Shar-Teel after she is defeated in the duel).
Dismiss one of the NPC pair members; both members of the pairing should leave the party and remain in place.
Talk to one of the dismissed NPCs and send her/him to an inn; the NPC will begin to exit the area.
Immediately recruit the remaining dismissed NPC before the other member of the pairing has exited the area.
The NPC successfully re-joins.
As soon as the partner NPC exits the area, the reform party screen is presented again.
Attempting to remove another NPC will cause the game to freeze. Alt-tab to view a notification mentioning that an error has occurred and the path to a crash dump file.
I've tested this with the following pairs: Jaheira/Khalid and Xzar/Montaron after Shar-Teel is defeated and subsequently joins. The game crash is always reproducible following the above steps. My game is BG:EE with SoD, v2.5.17.0.
Fortunately, the workaround is rather obvious: just wait until the NPC sent to an inn completes the exit area action before recruiting her/his partner.