[xwiki-users] Velocity Macro Error

Hi everyone, Some of my users get a "Failed to execute the [velocity] macro" error in the "Recent Changes" section after update to version 4.2-MILESTONE-2. Others don't... I really don't know how to resolve this. I thought about a "privileges" probleme since only some users get this error at loging but how can I resolve it There is a similar error here in the xwiki-based XWiki website ! http://playground.xwiki.org/xwiki/bin/view/Main/RecentChanges The full error stack is in the attachement Thanks for your help Regards Ce message et toutes les pi?ces jointes (ci-apr?s le < message >) sont confidentiels et ?tablis ? l'intention exclusive de ses destinataires. Toute utilisation de ce message non conforme ? sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. Si vous recevez ce message par erreur, merci de le d?truire sans en conserver de copie et d'en avertir imm?diatement l'exp?diteur. Internet ne permettant pas de garantir l'int?grit? de ce message, la Caisse des D?p?ts et Consignations d?cline toute responsabilit? au titre de ce message s'il a ?t? modifi?, alt?r?, d?form? ou falsifi?. Par ailleurs et malgr? toutes les pr?cautions prises pour ?viter la pr?sence de virus dans nos envois, nous vous recommandons de prendre, de votre c?t?, les mesures permettant d'assurer la non-introduction de virus dans votre syst?me informatique. This email message and any attachments ("the email") are confidential and intended only for the recipient(s) indicated. If you are not an intented recipient, please be advised that any use, dissemination, forwarding or copying of this email whatsoever is prohibited without Caisse des Depots et Consignations's prior written consent. If you have received this email in error, please delete it without saving a copy and notify the sender immediately. Internet emails are not necessarily secured, and declines responsibility for any changes that may have been made to this email after it was sent. While we take all reasonable precautions to ensure that viruses are not transmitted via emails, we recommend that you take your own measures to prevent viruses from entering your computer system.