Keep receiving message saying Vulnerability protection has been corrupted

I keep receiving this message every couple of days or so on my macbook pro.  The Vulnerability Protection signatures have been corrupted and could not be used. You should run LiveUpdate immediately and restart your computer. If the problem persists after you restart your computer, please re-install the product.
Your computer will not be protected until you restart your computer. Symantec apologizes for this error. (Error location 1)

 

I am not sure how to go about fixing this as I have restarted the comp and even reloaded the software.  

Any help would be appreciated!