Error running upper extremity model

[Gautam Ramachandra]

I am trying to run a python script for MoBL_ARMS_module2_4_allmuscles.osim which is available on simtk repository but I am getting the following error, please help me to resolve this issue

Code: Select all

  File "/opensim/lib/python2.7/site-packages/osim/env/arm.py", line 28, in __init__
    manager.integrate(state)
  File "/opensim/lib/python2.7/site-packages/opensim/simulation.py", line 37940, in integrate
    return _simulation.Manager_integrate(self, *args)
RuntimeError: std::exception in 'bool OpenSim::Manager::integrate(SimTK::State &)': SimTK Exception thrown at AbstractIntegratorRep.cpp:428:
  Integrator step failed at time 0.10326404854881473 apparently because:
SimTK Exception thrown at AbstractIntegratorRep.cpp:547:
  Error detected by Simbody method AbstractIntegrator::takeOneStep(): Unable to advance time past 0.103264.
  (Required condition 't1 > t0' was not met.)

[Dimitar Stanev]

Probably, large forces are applied and the tolerance of the numerical can't be achieved. I suggest you to inspect the motion and the input.

[Gautam Ramachandra]

Large forces are not applied, I have checked so any other reasons for this error ?

[Dimitar Stanev]

Maybe constraints apply these forces. You can try to disable them one by one.

[Gautam Ramachandra]

I disabled the constraints but still getting the same error