I have a simulation that meshed and ran nicely a couple of times yesterday but since then it is taking forever to run the simulation. Then it gets near the end and I get some error message about pre-conditioner failing.
The iterative solver stopped.
Status code:2 PRECONDITIONER_FAILS_TO_FACTOR
No result saved
So the few times that I've been able to get the model to mesh, it won't run. I had it run yesterday a couple of times and had it close to my FOS of 2 on the weldment, but I added a gusset plate and now it won't run.
Try turning Soft Springs on. It sounds like maybe the gusset you added is not "floating" in the analysis.