Hi,
this can be related to the thread https://blenderartists.org/forum/showthread.php?368825-AttributeError-KX_GameObject-localLinearVelocity-is-missing-a-physics-controller
The thing is that I am using Morse simulator and need that some robots does not collide so I use robot.make_ghost() but as soon as I also add robot.append(MotionXYW()) then blender crashes with the message
KX_GameOject.worldLinearVelocity is missing a physics controller
is there a solution for having velocity with no physical constrains?
regards
benja