I am using motion analysis study to study the force and stress analysis for closed loop mechanism which already has redundant constraints for all closed kinematic chain. when I wanted to study the force, the following message appear "This motion study has redundant constraints which can lead to in valid force results would you like to replace redundant constraints with bushings to ensure valid results." If I choose yes, the answer is not logic and incorrect. I would like what should I do becuase the mechanism has already redundant constraints. Thanks in advance.