I've had four separate issues, all relating to seemingly invincible characters. Xorr, if defeated after his bodyguards, becomes non-hostile but never initiates the conversation to end his quest, leaving it hanging. Lashowe was invincible after taking some damage, but was fixed using a standalone drag-n-drop file when reloading a save before the fight. And both Bastila AND Malak on the Star Forge were unbeatable after taking them down to almost zero health, but not when I loaded a save in their modules I had before I installed K1R.