I am already using the m2eclipse from update-dev, eclipse says: Maven Integration for Eclipse (Required) 0.9.9.200909092308 org.maven.ide.eclipse.feature.feature.group Before I had used the update archive, now I switched to the URL http://download.jboss.org/jbosstools/updates/nightly/trunk/ and updated, the outcome is the same. Since this seems not to be a wrong usage, I have created a Jira Issue and will attach the logfile there: https://jira.jboss.org/jira/browse/JBIDE-4972 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4258705#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...