NAV 11 Vulnerability Protection Error OSX 10.6.7

I just installed NAV 11.1 on my MacBook Pro running OSX 10.6.7 and every time I reboot I get an error window saying ...

 

"The Vulnerability Protection engine has been corrupted and could not be used. You should run LiveUpdate immediately. If you problem persists, please try re-installing this product."

 

I've tried re-installing ... no luck. Live update doesn't work through my companies network, i get the error ...

 

"Updating error. There was an error performing the update".

 

So I'm stuck with this error every time I reboot. Any advice is greatly appreciated.

 

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