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Error running Forward Dynamics on model

Posted: Mon Mar 18, 2013 2:32 pm
by bcfjohns
When I try to run Forward Dynamics in the OpenSim GUI with the model I get the following error: java.lang.RuntimeException: SimTK Exception thrown at SmallMatrixMixed.h:878:
Error detected by Simbody method lapackInverse(Mat<>): Matrix is singular so can't be inverted (Lapack getrf info=3).
(Required condition 'info==0' was not met.)

This happens with both UpperLowerBody.osim and UpperLowerBodySimple.osim. In both cases I'm not setting any controls. I also tried it in OpenSim 3.0 and the beta release of 3.0.1

Thanks,
-Ben