java.lang.IllegalArgumentException: Invalid size
        at org.jdesktop.layout.GroupLayout.checkResizeType(GroupLayout.java:223)
        at org.jdesktop.layout.GroupLayout.checkSize(GroupLayout.java:208)
        at org.jdesktop.layout.GroupLayout.access$500(GroupLayout.java:85)
        at org.jdesktop.layout.GroupLayout$GapSpring.<init>(GroupLayout.java:2851)
        at org.jdesktop.layout.GroupLayout$SequentialGroup.add(GroupLayout.java:1588)
        at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.fillGroup(SwingLayoutBuilder.java:317)
        at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.composeGroup(SwingLayoutBuilder.java:232)
        at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.fillGroup(SwingLayoutBuilder.java:253)
        at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.composeGroup(SwingLayoutBuilder.java:232)
        at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.createLayout(SwingLayoutBuilder.java:174)
        at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.setupContainerLayout(SwingLayoutBuilder.java:107)
        at org.netbeans.modules.form.VisualReplicator.setupContainerLayout(VisualReplicator.java:791)
        at org.netbeans.modules.form.VisualReplicator.updateContainerLayout(VisualReplicator.java:324)
        at org.netbeans.modules.form.VisualReplicator.updateAddedComponents(VisualReplicator.java:337)
        at org.netbeans.modules.form.FormDesigner$FormListener.run(FormDesigner.java:2252)
        at org.netbeans.modules.form.FormLAF$3.run(FormLAF.java:288)
        at org.openide.util.Mutex.doEventAccess(Mutex.java:1355)
        at org.openide.util.Mutex.readAccess(Mutex.java:268)
        at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:273)
        at org.netbeans.modules.form.FormDesigner$FormListener.processEvents(FormDesigner.java:2179)
        at org.netbeans.modules.form.FormDesigner$FormListener.formChanged(FormDesigner.java:2145)
        at org.netbeans.modules.form.FormModel.fireEvents(FormModel.java:1268)
        at org.netbeans.modules.form.FormModel.fireEventBatch(FormModel.java:1241)
        at org.netbeans.modules.form.FormModel.firePendingEvents(FormModel.java:1204)
        at org.netbeans.modules.form.FormModel.access$000(FormModel.java:62)
        at org.netbeans.modules.form.FormModel$2.run(FormModel.java:1184)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)