Error message Re: Systems File "AppleUSBEthernetHost.kext"

On 10-3-14 I received this error message:
The system extension “/System/Library/Extensions/AppleUSBEthernetHost.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
I looked at the file and found that it was installed in 2012. Now I am wondering if my machine is corrupted. I did just install an HP Printer update from Apple, which may or may not have preceded the presentation of the error message.
Thanks for any feedback.

In Finder > Go > Go to folder, type in /System/Library/Extensions
Look for AppleUSBEthernetHost.kext and move it to the Trash.
Download and install the latest version of iTunes.
Reboot your Mac.

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