Multibody Simulation in simscape

Hello ,

I am tryring to do a dynamic simulation by importing the CAD model from inventor to simscape i have given a constraint that acts as a lead srew joint in the inventor assembly but when i import the model into simscape it kind of shows an error at that point and replaces it with a rigid joint. when i am trying to shift these to ports to a lead screw joint from multibody library the following error is coming i also tried inverting the ports but even that did not work "Model not assembled: position violation *** Resolve this issue in order to simulate the model.Model not assembled: position violation *** " . below i have attached my project file with the step file of CAD assembly

Please help me to solve the above query it concerns with my academic project. Thanks in advance.

regards,

Ramesh