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