Hello David,
Thank you for your message.
You are using the offline/legacy version of the configurator, not the 'Online' option ,correct? If so, then uninstalling Host is a necessary thing, we are sorry for that. This is required because the msi-building process happens on the Viewer machine itself.
With regards to the images not loading, there was a faulty update of the site CMS system. We've fixed it now. Thanks for reporting!