After some browsing around I got an exception to show up in my console output ----------------------------------------------------------------------------- Key: JBIDE-3233 URL: https://jira.jboss.org/jira/browse/JBIDE-3233 Project: Tools (JBoss Tools) Issue Type: Bug Components: jmx Reporter: Max Rydahl Andersen Fix For: 3.0.0.cr1 Exception in thread "Thread-67" java.lang.NullPointerException at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:111) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cache(QueryContribution.java:130) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.cacheEntry(QueryContribution.java:105) at org.jboss.tools.jmx.ui.internal.views.navigator.QueryContribution$RefineThread.run(QueryContribution.java:88) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira