I tried selecting all objects/polygons, and hiding them, and nothing. Everything's there. As soon as it's time to import the polygons, that's when BB crashes.
Right click and press unhide all and check if there are any objects that aren't rigged.
Which is what I'm trying to do, but man it's such a weird model design Might need someone to have a look see The best way would be the blend/weight the vertices so the ones near the top of the legs are more influenced by the LegN or HipN bones, right?
That Anubis model would probably fit well over Lucario with those dodgy legs since he is based upon a jackal type creature.
Sounds like it'd be a really good game if you could pull it off. I'm not doubting your skills but I know how hard games are to make, I've been doing a uni course on making games for 2 years now and a lot of work goes into it.