Thanks for the help Ton. I am assuming the 'das3test.m' file you referenced is the 'das3sim.m' file found in the das3-v1.0.zip folder, is this correct? Further, when running das3sim it is our understanding that the input for this is the equilibrium.mat file. Inside this file is a variable 'x' that h...

When trying to simulate a motion to extract information on muscle activation, OpenSim tries to simulate, but we get the following error: 'Integrating from 0 to 1000 ForwardTool::run() caught exception SimTK Exception thrown at AbstractIntegratorRep.cpp:428: Integrator step failed at time 0 apparentl...