What is your issue?
1. Cannot download because the file is not found at the website? 404 error?
2. Cannot download because the file might be deleted right away?
3. Cannot install, because nothing happens when double-clicking the install .exe?
4. Cannot install, because the setup process doesn't finish (it disappears)?
5. Cannot install, because the window for setup disappears, but there is an icon for it still on the task bar?
By knowing what you mean by download, we can narrow down the issue find perhaps find a solution.