Update:

I think the reason of the error message comes from a bug in Opensim 4.4! I repeated the IK by OpenSim 4.3 and it worked perfectly.

regards

Dina

Hi Ayman,

thank you for your tips. You are right, I found a red stop button with the message: "java.lang.ArithmeticException: / by zero". I understand what it means but I do not have an idea what should be corrected to solve this issue.

regards

Dina

Hello, thank you for your reply. Unfortunately I do not see the movement even when I scroll it manually, maybe only for one specific frame. When I Click the play bottun it does not start to play at all even with speed of 0.01 although I see in .mot file that for each frame there is a specific value ...

Hello everyone, I have just solved the inverse Kinematic for my scaled model. The result of scaled model is good and the .mot file is been generated correctly but when I load the motion the model does not move although the motion tool is active. I see that the model is in true (t=0 sec) position aft...

Hi,
try to check the position of each marker on the Opensim model from different views. Sometimes we think that we have it placed correctly but from other views they are not correctly positioned.

Hi Nastaran,

I dont know if you still need it, but you can easily download version 3.3 of OpenSim from SIMTK page, open the model once in it and save it. Now the file is ready to open in any upper version of OpenSim.

regards

Dina