I would suspect that there is a previous Norton or McAfee installed and that they are still in the registry. More info is needed. http://www.computing.net/howtos/sho... The above link may help...good luck
I am having the same problem. Going from Version 2009 to 2011 it uninstalled the old but can't instal teh new Message: OxC0070643 General Internal Error AVG WatchDog avgwd could not be installed. Verify that you have sufficient privileges to install System Serv. OxC0070783 Context: MSI action failed. I will contact AVG Australia and query with them. Unfortunately this leaves me without any working anti virus software - damn it!
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