Part is lost in Assembly

I just created and asembly of 3 parts.  They were all there when I saved it.  When i went back in to re-open it one part is missing.  It says it can not locate the part, which the link is correct.  When I go and try to open the part from the Assembly tree it comes up blank.  But if i exit out of everything and just open the part it's self it works.

I even deleted the assembly and created a new one and also had someone else open up the missing part on their computer.

Please help!

Jodi

SolidworksAssemblies