SolidWorks Utilities

Hi All,

First, I couldn't find a category for problems using SW Utilities,so that's why I'm posting here.
My problem is when using the compare geometry I get a fault saying"xxxx.sldprt failed SolidWorks check. Compare geometry may fail orshow incorrect results. Do you wish to continue checking the seconddocument?"

The part that fails is purely modelled in SW, and nothing fancy.Anyone know what is wrong?

Thanks,
FlemmingSolidworksDesign Checker