I'm trying to run MOCO inverse and find the muscle activation for simple example; right knee flexion without external force. I have used the similar model in "SquatToStand" example but locked the all coordinates except r_knee and I have disable all muscles except knee flexor and extensors. The model is in standing pos (hip flexion 0) and I made the constant motion for r_knee from 0 to 90.
MOCO can't solve the problem and I got this error.
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[2021-09-20 13:53:06.752] [error] Model unable to assemble: SimTK Exception thrown at Optimizer.h:133:
Value out of range in OptimizerSystem Constructor: expected 1 <= number of parameters <= 2.14748e+09 but number of parameters=0..Model relaxing constraints and trying again.
[2021-09-20 13:53:06.757] [error] Model unable to assemble with relaxed constraints: SimTK Exception thrown at Optimizer.h:133:
Value out of range in OptimizerSystem Constructor: expected 1 <= number of parameters <= 2.14748e+09 but number of parameters=0.
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[2021-09-20 13:16:59.239] [info] Elapsed real time: 16 second(s).
[2021-09-20 13:16:59.239] [info] 9/20/2021 1:16:59 PM
[2021-09-20 13:16:59.239] [warning] MocoCasADiSolver did NOT succeed:
[2021-09-20 13:16:59.239] [warning] Invalid_Number_Detected