I have tried everything that has been suggested to download messenger plus and i still get it is not a valid win32 file.  I am using vista and live messenger 8.1,  I also get the same message no matter what computer I use as I have access to a laptop and another desktop both running xp but still the same error message.  I have completely removed messenger and reloaded it  When I try to go to the mirror site I cannot find msgplus anywhere it shows me all kinds of programs but not megplus.

Download from mirror
http://shoutbox.menthix.net/showthread.php?tid=67828

Or you could just download it from http://random.menthix.net/mpl_mirror/MsgPlusLive-423.exe.

Simtel is the official mirror, but they went downhill allot. You're now required to download install some strange client before you can download anything from them .

I mirror both Plus! versions at my website (if you choose "local" after pressing the download button you will get them off my site instead of beeing redirected to the official download page).

In this case you'd want the Live version wich is located here.

I mirror all released builds of Messenger Plus! Live from:
http://www.msgstuff.com/pluslivebuilds/