This only seems to happen when renaming a contact using the Right Click > Messenger Plus! Extras > Rename Contact...
If you try to rename a contact who is apart of the Mobile group Plus! freezes and so does MSN Messenger but when you restart MSN Messenger the name has been set.
Windows Version: Windows XP, 5.01.2600
Messenger Client Version: 7.0.0332 (Offical Beta Tester)
Messenger Plus! Version: 3.40.0107
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