Hello list, Looks like something has changed on release.mozilla.org, possibly in the last few hours. Using Eclipse Europa (on Mac OS X 10.4) the HibernateTools update site installation fails with a dialog stating the following: Update operation has failed Error retrieving "plugins/org.mozilla.xpcom_1.8.1.3-20070904.jar". [Server returned HTTP response code: "404 Not Found" for URL: http://releases.mozilla.org/pub/mozilla.org/xulrunner/releases/1.8.1.3/co.... ] Server returned HTTP response code: "404 Not Found" for URL: http://releases.mozilla.org/pub/mozilla.org/xulrunner/releases/1.8.1.3/co... . The required file now appears to be located at: http://releases.mozilla.org/pub/mozilla.org/xulrunner/releases/1.8.1.3/co.... .. Regards, Fred