Where can I find old versions?

I have updated to 4.1.15 and had some problems with it. I uninstalled it and downloaded version 4.0.141842.828 from the link on this board on April 12th. However, when I installed it, I found it was version 4.1.15. I also downloaded 4.0.14 from a couple of other download sites, with the same result. When I installed, I had version 4.1.15. Where can I download version 4.0.14?

Double post.
Topic Locked.