title: Exception during 'super' constructor evaluation
body: <p>Can anyone help me with this. I'm getting the error message that says Exception during super constructor evaluation when I try to switch to design mode in eclipse. I'm using gwt 2.5.1 with gxt 2.2.5. When I do not use gxt I'm able to use the design mode. I tried switching different gxt versions. I tried gxt 2.1 - 2.2.4 with no success. I know that it's a compatability problem with gwt and gxt but I do not know which versions of gxt go with gwt 2.5.1 I even dropped down to gwt 2.2.0 with no sucess. I've placed the stack trace below. Any help would be appreciated. Also I'm using </p>
  
  <p>eclipse
  Version: Indigo Service Release 2
  Build id: 20120216-1857</p>
  
  <p>Stack Trace
  org.eclipse.wb.internal.core.utils.exception.DesignerException: 313 (Exception during 'super' constructor evaluation). Window() {} java.lang.NoSuchFieldError: DESCRIPTION
      at com.google.gdt.eclipse.designer.gxt.model.layout.DefaultLayoutInfo.(DefaultLayoutInfo.java:39)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createDefaultImplicitLayout(LayoutContainerInfo.java:231)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.initialize_createImplicitLayout(LayoutContainerInfo.java:208)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createExposedChildren(LayoutContainerInfo.java:159)
      at org.eclipse.wb.internal.core.model.creation.ThisCreationSupport.create(ThisCreationSupport.java:275)
      at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluateJavaInfoUsingCreationSupport(JavaInfoEvaluationHelper.java:642)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.addJavaInfo(JavaInfoParser.java:1261)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:253)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$9(JavaInfoParser.java:238)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:153)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:1)
      at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:159)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:151)
      at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:534)
      at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:417)
      at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
      at org.eclipse.wb.internal.core.editor.UndoManager$6.run(UndoManager.java:330)
      at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
      at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
      at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
      at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
      at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
      at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
      at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
      at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
  Caused by: java.lang.NoSuchFieldError: DESCRIPTION
      at com.google.gdt.eclipse.designer.gxt.model.layout.DefaultLayoutInfo.(DefaultLayoutInfo.java:39)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createDefaultImplicitLayout(LayoutContainerInfo.java:231)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.initialize_createImplicitLayout(LayoutContainerInfo.java:208)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createExposedChildren(LayoutContainerInfo.java:159)
      at org.eclipse.wb.core.model.JavaInfo.initialize(JavaInfo.java:419)
      at org.eclipse.wb.core.model.JavaInfo.setObject(JavaInfo.java:1267)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.ComponentInfo.setObject(ComponentInfo.java:65)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.ContentPanelInfo.setObject(ContentPanelInfo.java:57)
      at org.eclipse.wb.internal.core.model.creation.ThisCreationSupport.create(ThisCreationSupport.java:269)
      ... 36 more</p>
  
  <p>Full context stack trace:
  org.eclipse.wb.internal.core.utils.exception.DesignerException: 313 (Exception during 'super' constructor evaluation). Window() {} java.lang.NoSuchFieldError: DESCRIPTION
      at com.google.gdt.eclipse.designer.gxt.model.layout.DefaultLayoutInfo.(DefaultLayoutInfo.java:39)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createDefaultImplicitLayout(LayoutContainerInfo.java:231)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.initialize_createImplicitLayout(LayoutContainerInfo.java:208)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createExposedChildren(LayoutContainerInfo.java:159)
      at org.eclipse.wb.internal.core.model.creation.ThisCreationSupport.create(ThisCreationSupport.java:275)
      at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluateJavaInfoUsingCreationSupport(JavaInfoEvaluationHelper.java:642)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.addJavaInfo(JavaInfoParser.java:1261)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:253)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$9(JavaInfoParser.java:238)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:153)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:1)
      at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:159)
      at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:151)
      at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:534)
      at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:417)
      at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
      at org.eclipse.wb.internal.core.editor.UndoManager$6.run(UndoManager.java:330)
      at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
      at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
      at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
      at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
      at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
      at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
      at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
      at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
      at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
  Caused by: java.lang.NoSuchFieldError: DESCRIPTION
      at com.google.gdt.eclipse.designer.gxt.model.layout.DefaultLayoutInfo.(DefaultLayoutInfo.java:39)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createDefaultImplicitLayout(LayoutContainerInfo.java:231)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.initialize_createImplicitLayout(LayoutContainerInfo.java:208)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.LayoutContainerInfo.createExposedChildren(LayoutContainerInfo.java:159)
      at org.eclipse.wb.core.model.JavaInfo.initialize(JavaInfo.java:419)
      at org.eclipse.wb.core.model.JavaInfo.setObject(JavaInfo.java:1267)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.ComponentInfo.setObject(ComponentInfo.java:65)
      at com.google.gdt.eclipse.designer.gxt.model.widgets.ContentPanelInfo.setObject(ContentPanelInfo.java:57)
      at org.eclipse.wb.internal.core.model.creation.ThisCreationSupport.create(ThisCreationSupport.java:269)
      ... 36 more</p>