[ODE] another access violation

[pia dalusong]

i have an additional question.
i created a car with 4 wheels.  they all go through
the same functions and they all get geomIDs and
BodyIDs but the last wheel has a problem with geom
functions like dGetGeomPosition or dSetGeomPosition. 
The rest are fine.  It works ok with dGetBodyPosition.
why is that?  what can I do?  Is this  a reason for my
spacecollide function having an error?  I already
tried running a simulation without it and it worked. 
so the problem is centered there.  what should I do
now?

please help.

thanks

pia

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