[ODE] Threads and ODE?

[Chris Spencer]

I'm unable to run a small ODE simulation for more than a couple
minutes before ODE crashes with the error:

ODE INTERNAL ERROR 2: invalid operation for locked space in dGeomMoved()

Is this caused by ODE's buggy memory management, or is it something
I'm doing? I'm manipulating ODE objects in a separate thread from the
one running the ODE simulation. Could that be causing the error? What
would be the best way to update a simulation from multiple threads
without having to pause the simulation?

Thanks,
Chris