If you install the starter site onto a port other than 80 you may need to do some code munging.  On line 276 of App_Code\SiteContext.cs there is a line of code that looks like this:

            builder.Port = -1; // Removes the port setting from the site.

This ensures that the correct port is used for the scheme.  If you are using non-standard ports you will need to change this.  For instance:

            builder.Port = secure ? 8443 : 8000;

This will use 8443 for https connections and 8000 for http connections.

You will also need to change line 49 of User\Login.aspx.cs:

            builder.Port = 8443;