trying to download 4.06

[ddouglass]

Did you buy two upgrades or just one? If you only bought one then it will only install on two computers not four. To get four you would have had to buy two upgrades, one for each version 3 license you have.
Your problem is the version 3.1? does not have the online removable code. Only the last couple version 3.2? had this set up and as well as the version 4.0?s.
If by download code you are referring to the registration code then yes it does require one and you should have two version 3 codes. If they both say that it is installed on two computers then you will have to wait for MTU to unlock one.