The extension is .man instead of .msi in the downloadable files [closed]

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I examined the Main Installer and the extension is ".man" instead of the normal ".msi"

I tried in a) http://www.libreoffice.org/download/libreoffice-stable/

The downloaded installer for both LibreOffice stable versions 4.1.5 & 4.2.2 was in ".man"!!!!!!

and

b) http://el.libreoffice.org/download/

The downloaded installer for LibreOffice stable version 4.1.5 was NORMAL = ".msi" The downloaded installer for LibreOffice stable version 4.2.2 was in ".man"!!!!!!

OS: Windows 8.1 Pro 32-bit, IE-11.

I found a similar case here: http://ask.libreoffice.org/en/question/4448/update-windows-cant-open-this-file/

How to solve the above mentioned bug?

thanks