Lifting Slings - Model Not Stable

Hi All,

I have a piece of structure which is lifted with 4 slings. The structure has some internal load, but I have also put a small impact/side load on the structure. The analysis is failing always due to the error that the model is not stable, and have excessive displacements.

Is there a way to make the model stable?

Regards,

LS

SolidworksSimulation