Hi, I've checked the error and I know the problem. It's because the query has an empty set which is not valid HQL: " doc.space not in ()" There's a bug in RecentChanges here: #set($discard = $criteria.put("doc.space not in (${blacklistedSpacesParameters})", $blacklistedSpaces)) There should be a check around it like: #if ("$!blacklistedSpacesParameters" != "") #set($discard = $criteria.put("doc.space not in (${blacklistedSpacesParameters})", $blacklistedSpaces)) #end However there is nothing to correct on our side since the RecentChanges page has been removed a long time ago and replace by the ActivityStream macro (http://extensions.xwiki.org/xwiki/bin/view/Extension/Activity+Macro) which you see used in the dashboard now. So, as a conclusion you can either: * Fix the page with the fix I mentioned above * Remove this page from your wiki Hope it helps, -Vincent On Sep 11, 2012, at 2:52 PM, xkiwi <mouloud.aouali-e(a)caissedesdepots.fr> wrote: