Remove Silverlight
/Applications/Microsoft\ Silverlight
/Library/Application\ Support/Microsoft/PlayReady
/Library/Application\ Support/Microsoft/Silverlight
/Library/Internet\ Plug-Ins/Silverlight.plugin
/private/var/db/receipts/com.microsoft.SilverlightInstaller.bom
/private/var/db/receipts/com.microsoft.SilverlightInstaller.plist
/Users/administrator/Library/Application\ Support/Microsoft/Silverlight
/Users/administrator/Library/Preferences/com.microsoft.silverlight.plist