java.lang.IllegalStateException: javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=com.sun.java.swing.plaf.windows.XPStyle$XPFillBorder@1927bd0,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=javax.swing.plaf.ColorUIResource[r=0,g=0,b=0],disabledTextColor=javax.swing.plaf.ColorUIResource[r=109,g=109,b=109],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=2,left=2,bottom=2,right=2],selectedTextColor=javax.swing.plaf.ColorUIResource[r=255,g=255,b=255],selectionColor=javax.swing.plaf.ColorUIResource[r=51,g=153,b=255],columns=0,columnWidth=0,command=,horizontalAlignment=LEADING] is not attached to a vertical group
   at javax.swing.GroupLayout.checkComponents(GroupLayout.java:1090)
   at javax.swing.GroupLayout.prepare(GroupLayout.java:1040)
   at javax.swing.GroupLayout.layoutContainer(GroupLayout.java:910)
   at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.createLayout(SwingLayoutBuilder.java:199)
   at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.setupContainerLayout(SwingLayoutBuilder.java:108)
   at org.netbeans.modules.form.VisualReplicator.setupContainerLayout(VisualReplicator.java:900)
   at org.netbeans.modules.form.VisualReplicator.updateContainerLayout(VisualReplicator.java:366)
   at org.netbeans.modules.form.FormDesigner$LayoutMapper.rebuildLayout(FormDesigner.java:2306)
   at org.netbeans.modules.form.layoutdesign.LayoutDesigner.rebuildLayoutRecursively(LayoutDesigner.java:234)
   at org.netbeans.modules.form.layoutdesign.LayoutDesigner.rebuildLayoutRecursively(LayoutDesigner.java:231)
   at org.netbeans.modules.form.layoutdesign.LayoutDesigner.updateCurrentState(LayoutDesigner.java:213)
   at org.netbeans.modules.form.FormDesigner.updateComponentLayer(FormDesigner.java:641)
   at org.netbeans.modules.form.FormDesigner.access$2200(FormDesigner.java:103)
   at org.netbeans.modules.form.FormDesigner$FormListener$2.run(FormDesigner.java:2578)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)