Error message (50/344) from HOOPS routine 'KOpen_Segment'

When making a 3d pdf in sw2011 from an assembly I get this error what is it and how do i get rid of it?

Error message (50/344) from HOOPS routine  'KOpen_Segment'


Syntax error during expansion of '/solidworks/config0/sheet0/view0/' -
Trailing '/' with no name following

SolidworksAssemblies