/system/library/extensions/AppleUSBethernet host.kext not properly installed

Message on pro: /system/library/extensions/AppleUSBethernethost.kext not properly installed. What can I do?

Open the Script Editor in the /Applications/AppleScript/ folder, copy and paste the entire following line into it, and press the Run button:
do shell script "chown -R root:wheel /System/Library/Extensions/AppleUSBEthernetHost.kext" with administrator privileges
If it doesn’t work, choose Go to Folder from the Finder's Go menu, provide /System/Library/Extensions/ as the path, throw the AppleUSBEthernetHost.kext item away, and reinstall iTunes; if you’re running Mac OS X 10.7 or newer, get the installer from Apple’s iTunes site instead of the linked article.
(124159)

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