Norton antivirus 2012 was installed, up to date and fully scanned when out of nothing Norton couldn't start and after a long period of time ends up in displaying this errorcode: "8504104".
I used the norton antivirus cd-rom to do a reinstallation, in fact the main procedere will first uninstall the current version and then should, install a clean version from the cd-rom as far as the installation procedure tells. Fact of the matter is that the uninstall procedure completely deleted the program files folder and it's contents.
For some reason Symantec is in denial for a long period about this issue. I found simular issues like these:
Norton seems to have deleted all program files
360 deleted system files and all my program files
NIS 2011 deleted all my program files. Help!