Shoutbox

I've been using WLM 9 since MP!L 4.80 came out, so I installed it and everything is fine, but then in about 1-5 minutes messenger crashes
Only appears a message that the app must be closed.

Its like this:


I've tried uninstalling both and reinstalling, the same thing happens, also tried replacing the dll

But whenever I install MP!L this error comes

Thanks.