4.06a install problem on 2nd computer

[spham2]

I purchased an upgrade for Hoster 4.06a to replace version 3.16 on my home computer and a Laptop last night. I am a registered owner with the proper registration # on both computers. I did the upgrade on the home computer last night and everything went great.
It works perfect. This morning I am trying to do the upgrade on the Laptop and when I get to the part that asks if you are doing an Upgrade or Remove (which it says DO NOT remove an existing installatio. Upgrade Reg Codes must find a previous version of Hoster installed) I select Upgrade. Hoster - InstallSheild Wizard then gives me a message: Please ensure that your internet connection is up and running before continuing. I have internet explorer open, I press OK and it just blinks and returns with the same message. If I press Cancel it stops any attempt to install.

Any help on the subject?