Bugs Rated 5 out of 5 stars

I can't open the options menu with the new version of ShareThis (for Firefox 4). Got this message :
"Erreur d'analyse XML : entité non définie
Emplacement : chrome://sharethis/content/customize_toolbar.xulNuméro de ligne 6, Colonne 1 :<window id="preferencesWindow" title="ShareThis - &msgstr_custom;" orient="vertical" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">^"
Can someone help me please ? (Yes, I'm french...)

For those who criticize privacy policy, is there another add-on you recommend to share links/pages/articles easily ?
Thank you all,
Morgane