The End-all Be-all Physics Engine

Miscellaneous Forums/Blitz Showcase/The End-all Be-all Physics Engine

Okay, more than likely I am just an idiot however when I try to run the ball demo I get a 'Funtion Normalize Not Found' error on the line that contains:

Normalize EntityX(cam,1)-EntityX(PickedEntity(),1),EntityY(cam,1)-EntityY(PickedEntity(),1),EntityZ(cam,1)-EntityZ(PickedEntity(),1)

And in most of the other demos, I get the error "Function Pointdistance Not Found"

Not sure what I am doing wrong, I am using B3D 1.83.

Thanks!
Steve