Cannot Apply a Load

Hello All,

I am trying to run my first Simulation analysis and it won't allow me to apply a load. I have a weldment frame that I created a contact set that bonded all of the sections together. I already created a gravity load and want to subject the frame to a load. I keep getting an error message (see attached pic).

I first tried to apply the load on a bolt hole, then on a flat surface, and finally on an edge. None of these worked. Does anyone know why this won't work? Thanks.

-Scott

SolidworksSimulation