Hi,
Try the folowing instructions.
1: Close all MSN browser windows .
2: Open MSN , Dont sign in .
3: Press CTRL+SHIFT+F11 . you should see a pop-up saying 'Remove account' click on it .
4: Open MSN butterfly and finish the MSN installation wizard by entering your email address and password .
5: Now try to sign in using your MSN butterfly .
Hope that helps.
Thanks,
Ron