Hello OpenSim team, I'm working on the analysis of ACL reaction while performing COD and Drup jump movements. For it, i used a model that simulates ACL ligament as a muscle without contraction ability. Now, I'm performing Static Optimization analysis and the error on the screenshoot shows up. I have...

Dear OpenSim team, i have a problem when I try to load models that i have downloaded from the forum of projects. The error i show on the screenshot appears only when i try to load this type of model, but everything loads perfectly when i load a model that belongs to the tutorials. I have already put...