Shoutbox

A friend of mine has some dodgy weird characters in his nickname. He doesn't know how they get there and doesn't know how to remove them. He doesn't see them himself. I, myself only see the characters when I open a conversation with him.
The problem started when I installed MSN 7.5. I hadn't had any problems before.
I also don't have problems when MsgPlus! isn't loaded.
These are the characters I mean:

I've took that picture when Plus! wasn't loaded.
When Plus! is loaded and I start a convo with the guy, I can't see the convo window. And the contact list gets messed up:


I've tried the custom names feature, but that didn't help either. Then this happens:


I hope this gets fixed soon.

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For the record (thanks to Cookie for reminding me):
MSN version: 7.5.299
Plus! version: 3.54.132
Windows version: Windows XP version 5.1 (Build 2600.xpsp_sp2_gdr.050301-1519 : Service Pack 2)

I have no other plugins installed.