swtoolbox.dll cannot be loaded

Hi,

I have recently upgraded to SolidWorks 2008 SP 3.0 and have neverfaced this problem in 2007.
When I try to use Toolbox I get a error message".\toolbox\swtoolbox.dll cannot be loaded. Either the Add-in orone of its componenst is missing"

How do I solve this?SolidworksToolbox