Full access needs to be granted to the Administrator - you need to change in the registry. Change registry permissions click start > Run > type Regedit expand "HKEY_LOCAL_MACHINE" tree then expand "SOFTWARE" tree then expand "CLASSES" tree locate "ppctl" folder, right click and goto permission allow full control if its not checked. Disclaimer - Take EXTREME care when in the registry!! Serious damage can be caused if you edit the wrong folder.