I am trying to create a model that can do dynamic simulations of the head and neck. I found that adding SpringGeneralizedForce objects with stiffness and damping allow the model to solve correctly. However, adding these objects makes a strange error occur with my residual forces. The residual forces...

Hi everybody. I am new to using OpenSim, and I am trying to work through the "dynamic walking challenge" example. I have successfully configured MATLAB for scripting, but I am having problems with the initSystem() command. When I run the Main_WalkerForwardSim.m script included in the example I get t...