
There was a post just made at the Mess with MSN Messenger forums where Strandberg from the MSDN forums has discovered how to remove the Web limitations from the Windows Live Messenger add-in SDK.
According to the thread:
The messenger plug-in SDK is a tad useless because it doesn’t allows you to read/write to files, make web calls, create proper forms, or actually do anything but sending pre-made messages. This is caused by the fact that its running with the web limitation by default.
View the thread for instructions on the workaround. Now thanks to Strandberg’s discovery, we can now use everything that our development language has to offer!

Although we thought Microsoft released the final of Windows Live Messenger to the public two days ago, they are very far from the final copy. As of this morning, all users were unable to login to Yahoo!’s services, except to view the main page. A few hours later and with the release of Yahoo! Messenger 8 Beta, all services were back to normal.
That wasn’t the end though. The .NET Messenger Service suddenly refused any connection attempt I sent to it. So, I jumped to the forums and I found out that there was a new WLM (now version 8.0.0792) and that contained one major update that would bring us closer to the WLM-Yahoo! interop - MSNP14, thanks Mario for the discovery.
According to Mario, upon the client signing in it supports MSNP14, but the server still only supports MSNP13. Also, many more things have been added to the text library, such as:
33008, “Two accounts were found for %1, so two separate contacts were added for this person.”
33013, “Yahoo! Messenger with Voice”
33014, “To add {33013} contacts, sign up for the {61143} Beta”
33005, “Example: example@live.com, example@yahoo.com”
33007, “A friend on the {33013} network has added you to their Messenger List. To send instant messages to {33013} contacts, sign up for the {61143} Beta.”
So maybe the WLM team has fully prepared us with the tools we need to support the interop when the time comes. Until that time comes, you can find out more about MSNP14 and the upcoming interop on the forum. Also, get the updated build in English or visit Mess with MSN Messenger for links to other languages!
MSNMX is a PHP5 MSN Protocol Framework; however, it is currently leaning more towards a bot-type application. As the near-future comes you will see features being removed and stored separately from the Framework itself, this will give you the ability to make it do as you wish - MSN Web-based Client, Bot, Party-Line, HTTP Webcam Streamer!? It’s all possible 
I’m very sad to announce it, but Offline Messenger is being discontinued. We were near testing release of OMv3 when Windows Live Messenger was announced and offline messages were going to be incorporated into it. As a result, we are currently not going to be proceeding with the development of OMv3. If by chance offline messages aren’t implemented into WLM, we will continue, but it looks like a negative guys.
I’d like to thank everyone in the MSN Community for supporting and making this project what it became. I’d also like to thank Maverick and noroom for assisting with the developing process, as well as: the msnfanatic community for their strong support, Daniel for troubleshooting, coding, and the MSNP core, and lastly but not least - doggie for managing, coding, testing, coordinating, advertising, and doing everything under-the-sun to make sure OM was working. Without all of you guys, this project would’ve never survived the three years it was up. Sadly, all good things must come to an end and I hope all of you enjoyed one of the best bots that the MSN Community could offer.
I’ve started development on Offline Messenger again and this time I need some help! If you have experience programming with MSN (without the API) and know the protocol pretty well, and think you can contribute to Offline Messenger, please contact me using this form. Thanks!