VBScript is a default component built into Windows, Vbscript is a common requirement among installers, but it can get disabled or broken.
The most common cause of this problem is because a specific version of McAfee Antivirus was installed in the past, which redirected a key vbscript dll. Then on uninstall, it doesn't put the real version back.
if that's the case, running the McAfee Consumer Products Removal Tool should fix it:
http://service.mcafee.com/FAQDocument...
Only if that doesn't work, do we recommend the other Microsoft FixIts, etc.