Norton Power Eraser error code: 0x80045008

Norton Power Eraser doesn't complete; I get "Norton Power Eraser successfully restored the internet connection host file & NPE proxy settings may have been modified.  Then it gives me two options:  exit or continue; so I click continue and it reruns the scan; I never get a message telling me that my system is clean;  keep getting this loop that reruns the scan until I get the error code 0x80045008; it tells me something about an unstable internet connection.  I ran NPE in safe mode and it found several bad files; I clicked on fix to take care of the bad files, but when I try to run it in regular mode, I get this loop; I used to get the message that my system was clean; I never got that internet connection message before.  I have windows vista home edition, 64 bit; I use firefox as my browser.  I ran a complete scan with Norton 360 and everything was clean; but NPE won't complete.