foxyproxy THESE FORUMS ARE CLOSED. NEW FORUMS AT FORUMS.GETFOXYPROXY.ORG

Hello,
I had to reinstall my system on a new hdd, and I made a copy / paste of my firefox directory in %APPDATA, so including Foxyproxy files.
Now this message frequently appear :

Erreur d'analyse XML : entité non définie
Emplacement : chrome://foxyproxyplus/content/licenseprompt.xul
Numéro de ligne 49, Colonne 5 :    <label value="&foxyproxy.subexpired.label;" style="font-weight: bold; color: red"/>
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Tells me if you want a translation. I have uninstalled and reinstalled FP+, put my licence information, and it's the same thing. However FP doesn't refuse to work. It's just annoying to get this box all the time.
Should I detele all datas linked to FP to make a proper installation ? How do that without loosing all my settings ?
Thanks