Hi, For those using a custom XWiki configuration with a custom web.xml, we have changed yesterday the way to configure xwiki. Namely we have changed the way XWiki is initialized. So if you're using a custom web.xml and you wish to upgrade to the trunk version (or to 1.0 beta 5 when it's out) you'll need to read the following: http://www.xwiki.org/xwiki/bin/view/Main/ ReleaseNotesXWiki10Beta5#HMigrationnotesfromallpreviousversions Thanks -Vincent