Solidworks Flow Simulation Boundary Conditions

Hi Everyone, 

I am trying to run a flow simulation on a ultimate frisbee disc, but I am having trouble setting the boundary conditions. I want air to flow over the disc, the disc does not need to move at all. I have set up the wizard, but then I want to set the boundary conditions, so I try to select the face of the computational domain, but it does not do anything once I click on it. I have tried using 'select other', box select, and lasso select, but it just will not select the box. I have tried hiding the disc so that it does not steal the click, but that does not work either. The screen looks like the last image. When I try to run the simulation without the boundary condition, the flow simulation window says 'Solver abnormally terminated' after a minute of preparing the model, but it says there are fluid cells, normal cells, and cells that have touched the solid. Can anyone help me with this error message or the boundary condition error? Attached are photos of the boundary condition selection, my wizard settings, and the disc file I am trying to use. As a last resort, if anyone could run the simulation and share the results, that would be amazing.

Thanks!