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This bug was originally marked as duplicate of bug 218719, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.3 Beta (Build 201210011125) VM: Java HotSpot(TM) Client VM, 20.8-b03, Java(TM) SE Runtime Environment, 1.6.0_33-b03 OS: Windows NT (unknown) User Comments: GUEST: Just launched application and clicked 'Activate Features'. Stacktrace: java.lang.NullPointerException at org.netbeans.modules.autoupdate.ui.SettingsTab$Listener.prepareContent(SettingsTab.java:468) at org.netbeans.modules.autoupdate.ui.SettingsTab$Listener.modelOrSelectionChanged(SettingsTab.java:486) at org.netbeans.modules.autoupdate.ui.SettingsTab$Listener.valueChanged(SettingsTab.java:434) at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:167) at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:147) at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:194)
Created attachment 127831 [details] stacktrace
The issue 218719 was fixed after 7.3 Beta, try to download&install 7.3 Beta2 instead - http://dlc.sun.com.edgesuite.net/netbeans/7.3/beta2/ *** This bug has been marked as a duplicate of bug 218719 ***