Help, part file showing no graphips, but features exist

Yup, I have a part here that worked fine. I adjusted afeature, and the shank disappeared only leaving a head. I startedfooling with it too, and now nothing shows up in the graphics area.It also doesn't show in the assembly it's in. I have zipped it andwill attach it here. Please help, thanks.SolidworksParts And Features