Melusine? Did you ever download special add ons? Maybe that's what it's looking for? I know there was one that had special vendors and items that many people downloaded.
Not much help, am I?!
Sorry! Hope you work it out! Try un-installing and re-install it?
Cloudy
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Raindancer of the Laughing Hyenas Clan
Storm-Queen
StormCloud of the Black Knight
Heart Mind Soul Forever