4.03 release on Wednesday???

[ddouglass]

If you bought the upgrade the 3.321 needs to be installed when you upgrade. Unlike in the past Upgrades now require the previous version be installed on the computer you are upgrading, this prevents someone from buying at the upgrade price and installing without having purchased a full version. This was being done and MTU was losing a lot of money.
You have to select Upgrade and not Remove. Both are there because that is a Windows Installer item that can not be modified, but you have to Upgrade.
The only requirements for the upgrade is that you keep your computer up-to-date as they have always said. You do not have to upgrade your IE or WMP though to make this one work.