When I try an activate via the email address I get the following error on the final step.

EndOfStreamException
 Unable to read beyond the end of the stream.

Source     : mscorlib

Stack Trace:
   at System.IO.__Error.EndOfFile()
   at System.IO.BinaryReader.ReadByte()
   at MicroFour.Licensing.ActivationClient.RequestActivation(IWebProxy Proxy, String Email, String Password, String Serial, String MacAddress, String ComputerName, List`1 SelectedItems, Boolean InstallLicense)
   at MicroFour.Licensing.ActivationClient.RequestActivation(IWebProxy Proxy, String Email, String Password, String Serial, String MacAddress, String ComputerName, List`1 SelectedItems)
   at Activate.ActivateMain.RequestActivation()

Here is how I got around it.   I am using IE7 so when the dialog popped up and asked for proxy information( which I don't use a proxy ) I left it as Internet Explorer.   The error would result at the end of the wizard.   I then selected Custom Proxy and entered in nothing and then the license wizard completed.   It's probably an IE7 issue for the wizard.

Richard

Thank you for that information, Richard.  You're not the first person to get this error message and it helps knowing how you solved it