OK if you go to... My Computer -> Local Disk (C
-> Program Files -> Messenger Plus! Live -> Scripts*....and see if any parts of a script remains and then list them.
Notes:
* - this signifies that you could encounter windows saying that the contents of the folder can't be displayed, just click on "Show the contents of this folder"
try removing each folder (by either moving it to the recycle bin by deleting it, or create a separate folder on you desktop and cut and paste each one to it) and if it doesn't help, you can then move the folder back to the scripts folder.
Note: I have a feeling the UNeed script could be the culprit, but I could be wrong