If the "hacked" version of WLM is just a changed version number then yes, this is probably why. See the instructions here to keep WLM 2009 without breaking compatibility with Plus!
Messenger Plus not working for 2009. - by Ryujin on 06-25-2012 at 05:42 PM RE: Messenger Plus not working for 2009. - by pollolibredegrasa on 06-25-2012 at 07:34 PM
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![[Image: chickennana.gif]](http://shoutbox.menthix.net/images/smilies/chickennana.gif){kind=small}
Vaccy is my thin twin! 
