I am running Parallels 4.0.3844. When I select "Check for updates", it tells me about 4.0.3848. However, the install just won't work. It takes me to a few screens, then all update screens disappear, and nothing downloads. The "Downloads" folder remains empty. Where can I download Parallels updates from the web site? When I go there, I only see to download the new Version 5. Can I download Version 4 updates? If there are other updates between my version and latest, do I need to download all and install in order, or can I only install latest?