I'm trying to analyze the suspension of a small buggy built for an SAE collegiate competition (Baja). Unfortunately, there are no instructors at my school that are proficient in SolidWorks to assist me.

My problem is that when running the simulation, I get an error that there may be inadequate fixtures. I have tried rechecking fixtures, using different connection combinations, simplifying the assembly, etc.. About 20+ hours of trying different things. I am now out of ideas. If you please, I would appreciate any help or advice!

I've attached the assembly below.