I was hoping the new patch would fix my problem, unfortunately my problem persists:
"Volare" Quest: I have to fix that sunken plane, but I need a device in order to stay longer under water. The quest guy, Jack (He's blond in case you don't remember him), he suddenly switched to hostile mode when I brought him the needed item. Since then I can't talk to him, he keeps threatening me with his knife in his hand, but he doesn't move. And this is an important quest, I can't just kill him or skip the quest, what could I do?
In addition, since ED-E is following me, several NPC's are yelling "watch out!" when I come close to them, it's weird. It think this is the same script that turned Jack into hostile mode.