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When Editor is in single view, "Save" item in menu and save icon are disabled. After docking editor into multi-tab view, "Save" is enabled. Also Compile, Go, Trace into, Execute, Build, Properties are inactive for single view Editor. [Libor] This still occures. When editor is in multi-tab view, "Save" and "Save All` is enabled. After undocking only "Save All" is enabled and "Save" is disabled. If I do any change to source "Save All" becomes enabled but if I click on it, this exception is thrown: Exception occurred during event dispatching: java.lang.ArrayIndexOutOfBoundsException: 0 at com.netbeans.ide.actions.SaveAction.performAction(SaveAction.java:48) at com.netbeans.ide.util.actions.NodeAction.performAction(NodeAction.java:87) at com.netbeans.ide.util.actions.NodeAction.actionPerformed(NodeAction.java:78) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1066) at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1101) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378) at com.netbeans.ide.awt.EnabledButtonModel.setPressed(EnabledButtonModel.java:85) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:217) at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:230) at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:230) at java.awt.Component.processMouseEvent(Compiled Code) at java.awt.Component.processEvent(Compiled Code) at java.awt.Container.processEvent(Compiled Code) at java.awt.Component.dispatchEventImpl(Compiled Code) at java.awt.Container.dispatchEventImpl(Compiled Code) at java.awt.Component.dispatchEvent(Compiled Code) at java.awt.LightweightDispatcher.retargetMouseEvent(Compiled Code) at java.awt.LightweightDispatcher.processMouseEvent(Compiled Code) at java.awt.LightweightDispatcher.dispatchEvent(Compiled Code) at java.awt.Container.dispatchEventImpl(