Trying to install on Desktop

[Ernie]

I am trying to install the Hoster upgrade on my desktop. It installed without any problems on my laptop. Once I'm on the internet, I open Hoster and start the process. Then in about 5 or so seconds a box opens and says.... Please ensure that your internet connection is up and running before continuing. If you would like to exit now, press cancel. I know the internet is running... without a doubt!!
Has anyone else had this problem?

Thanks