Messenger not working anymore.
 

Today I was logging to messenger again, but it said in order to login, I need
to install new version of messsenger. Without installing it, I can't login.
But I get this:

http://www.janikarvonen.com/install_messenger.jpg

How in earth I'm suppose to use messenger if I'm forced to install new
version which doesen't even work?

I use Windows XP 64 bit.