Hello Michael, Yes, I did modify them but fast mode target still can't be performed. I fixed pelvis, lumbar and translation of crank. CMC still crushed. Then, I tried to reduce freedom of the model so what I did was: adding the motion, and then lock some freedom like mtp_angle, subtalar_angle, knee_...

Thanks again for your advise. I tried to figure out something in CMC_setup file but failed. however, opensim online help mentions this: API Improvements •We updated the Coordinate class to the new property interface, improved its documentation and memory management, and added the propertyis_free_to_...

Hey Sherm, Thank you so much for your prompt reply. You are right, the error message is pretty similar to Andrew's but not exactly the same. I figured out that part just now but I still got stuck in CMC. I will appreciate any help from you. I ran fast tarket CMC, it failed and message panel showed m...

Hey Sherm, This is Vincent. I have the similar issue when I modified my pedaling model from open loop to closed loop, you mention the "non-physical", does it mean that mass or inertia of segment set to "0"? I checked my segment one by one but none of them are set to "0"(I do have soem inertia like I...