Cam is "invalid entity"...how to fix?

Hello,

I tried to using the cam mate, but it says that the curved surfaces are invalid entities. I then tried to knit the surface segments of the cam together, but that did not help either. The follower is a wheel that rotates around the center axis. Note, the cam profile was imported from AutoCAD; the file was made by someone else, and I am not sure where to look for design issues. Any suggestions on how to get this cam mate working?

SolidworksAssemblies