Toolbox Hardware rebuild errors

Hello all you helpful SW users,

I am using SW Acedemic year 2010-2011.  When ever I try and drag in a toolbox item, esp. nuts or bolts, I immediately get rebuild errors that will not go away.  I have even tryed to 'create part...' and still the same error msg.  My assy's feature mgr begins to look very ill, until I delete these bad boys.  Any help would be greatly apprctd.

Larry Dixon

SolidworksToolbox