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Ludo got this, see http://statistics.netbeans.org/analytics/detail.do?id=30207
Relevant stack trace: java.lang.NullPointerException at org.netbeans.modules.db.mysql.ConnectServerAction.enable(ConnectServerAction.java:83) at org.openide.util.actions.NodeAction$DelegateAction.resultChanged(NodeAction.java:611) at org.openide.util.actions.CookieAction$CookieDelegateAction.superResultChanged(CookieAction.java:330) at org.openide.util.actions.CookieAction$CookieDelegateAction.resultChanged(CookieAction.java:326)
I'm not sure how this can happen, this cookie should never be null, but the enable method seems to be called at strange times. I'm adding a check for null in the enable method.
Fixed: http://hg.netbeans.org/main?cmd=changeset;node=f286c45be90a http://hg.netbeans.org/main?cmd=changeset;node=e5ef679f30ad
*** Issue 128477 has been marked as a duplicate of this issue. ***