Yeah, it is the "import extra nodes" thing. The knives, and bow are no longer rigged to their bones. So they are just static objects. The import script is probably leaving out some crucial thing without the extra nodes checked. I spent several days trial and error/searching forum a few months ago on this. The only work around I came up with is to just delete the arrows from the nif. The HK model is flawless. I would rig it to the gunship. I don't know. I left the "aggressive AI" unchecked. I've never played BBAI so can't say. I wouldn't say they are more aggressive. More stubborn perhaps.