Pack and Go not working

Recently I had to reinstall SW on a new computer when I upgraded the operating system from Windows 7 to Windows 7 Enterprise.

Now when I try to use Pack and Go I get the following error.

"Could no load SOLIDWORKS DLL: sldshellutils"

Any idea how I can get this back?

Update: I found a file called sldshellutils.chm but no .dll version. Still does not work.

SolidworksGeneral