I added a sketch to a part, and now my apart is invisible.  It appears invisible when open, as well as in the assemblies.  The mates seem to still work, but I can't figure out why its invisible?  I rebooted.  I can rollback all the way up to the first boss extrude and its still invisible?

If I click on the boss extrude in the tree its outline shows. See below

I can change the thickness in the extrusion and it shows the body like it will work, but its still invisible.  

I have also attached the part file.