this MSI must be launched through setup

hi. my norton internet security 2004 became corrupt a couple of weeks after i installed it. it was working fine until then. i uninstalled it and when i try to reinstall it i get the message "this MSI must be launched through setup" and the instalation stops. any ideas??? tia

 

Symantec has this article at their website:

Error: "The MSI must be launched through setup" while installing Norton Internet Security™ or Norton Personal Firewall™ 2004

Besides the actions described in the above article, then also try to delete the contents of the temporary files folder.

But when reading newsgroups, then it seems like one have to a do a complete reinstall of Windows when Norton starts to act like this