[Moh200jo]

when I enabled collision by using this line

viz.collision(viz.ON)

the following error appears,

 File "<string>", line 1
    viz.VizIntersect([1,0.000000,0.500000,-0.452371,0.000000,1.000000,0.000000,28,1.#QNAN0,''])
                                                                                              ^
SyntaxError: unexpected EOF while parsing

this does not appear if I used this line

viz.phys.enable()