Shoutbox

If you have another add-on installed in Messenger, the first thing you should try is to uninstall them. Id it doesn't work, you should uninstall Messenger, delete its directory, reinstall Messenger and restart your computer to make sure any "damage" another addon could have done is corrected.

One simple thing you can do as well which will solve all problems related to faulty scripts and skins installed in Messenger Plus! is to run the Messenger Plus! unisntaller and go through the "Maintenance Wizard".

Hope it helps.