08-01-2011 04:01 PM - edited 08-01-2011 04:02 PM
redk9258 suggested this earlier....
Click start > run and type services.msc. In the services console, enable the Windows Modules Installer Service. Set it to Startup Type: Automatic, then click start. Retry the install.
08-01-2011 04:04 PM
One more thing I found that resolved another Ghost installation issue like this: