when it tries to connect to the remote utilities website it prompts an error and the installation doesn’t finish correctly.
Internet connectivity (and hence the website being displayed or not displayed) has nothing to do with successful one-click installation. The Host installs anyway - you can check that for yourself by opening the Windows Start menu or (if you selected not to install Start menu icons) by looking at the process list for that computer.
Hope that helps. Let me know if you need more assistance.
P.S. We'll soon replace opening the website with displaying a simple message window.