Can't create Section view

When I try to create a section view through an assembly I can create a section on one plane but not another. I was able to create sections yesterday on this assembly. This morning I updated to SP4, Could this be the issue? Usually when I have this problem it is because I have some issue with one of the components that I am trying to section. Does anyone have a suggestion for me?

Thanks Everyone,

Chris

SolidworksAssemblies