No GUI roots detected

[jldupont]

I get the message box "Designer was unable to find any GUI elements in your source" along with some log:

Plug-in Provider: Instantiations
Plug-in Name: GWT Designer Subscription
Plug-in ID: com.swtdesigner
Plug-in Version: 7.1.0.200907280606

java.lang.NoSuchMethodError: com.instantiations.designer.gwt.hosted.IHostedModeSupport.startup(Ljava/lang/String;Ljava/lang/String;Lorg/eclipse/core/runtime/IProgressMonitor;)V
at com.swtdesigner.gwt.model.widgets.support.GWTState$1.run(GWTState.java:164)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
at org.eclipse.ui.internal.progress.ProgressMonitorJobsDialog.run(ProgressMonitorJobsDialog.java:275)
at org.eclipse.ui.internal.progress.ProgressManager.run(ProgressManager.java:1191)
at com.swtdesigner.gwt.model.widgets.support.GWTState.<init>(GWTState.java:185)
at com.swtdesigner.gwt.model.widgets.support.GWTState.createState(GWTState.java:1875)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:429)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.classByName(UIObjectInfo.java:191)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.<init>(UIObjectInfo.java:68)
at com.swtdesigner.gwt.model.widgets.WidgetInfo.<init>(WidgetInfo.java:56)
at com.swtdesigner.gwt.model.widgets.panel.AbstractContainerInfo.<init>(AbstractContainerInfo.java:37)
at com.swtdesigner.gwt.model.widgets.panel.PanelInfo.<init>(PanelInfo.java:25)
at com.swtdesigner.gwt.model.widgets.panel.ComplexPanelInfo.<init>(ComplexPanelInfo.java:26)
at com.swtdesigner.gwt.model.widgets.panel.AbsolutePanelInfo.<init>(AbsolutePanelInfo.java:36)
at com.swtdesigner.gwt.model.widgets.panel.RootPanelInfo.<init>(RootPanelInfo.java:23)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.swtdesigner.gwt.model.GWTJavaInfoFactory.create(GWTJavaInfoFactory.java:163)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:114)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:97)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:90)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.isComponentCreation(JavaInfoParser.java:3868)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.endVisit(JavaInfoParser.java:1895)
at org.eclipse.jdt.core.dom.MethodInvocation.accept0(MethodInvocation.java:247)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2525)
at org.eclipse.jdt.core.dom.VariableDeclarationFragment.accept0(VariableDeclarationFragment.java:225)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2548)
at org.eclipse.jdt.core.dom.VariableDeclarationStatement.accept0(VariableDeclarationStatement.java:273)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2548)
at org.eclipse.jdt.core.dom.Block.accept0(Block.java:136)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2525)
at org.eclipse.jdt.core.dom.MethodDeclaration.accept0(MethodDeclaration.java:502)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.visit(JavaInfoParser.java:3089)
at org.eclipse.jdt.core.dom.TypeDeclaration.accept0(TypeDeclaration.java:467)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2548)
at org.eclipse.jdt.core.dom.CompilationUnit.accept0(CompilationUnit.java:214)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at com.swtdesigner.model.parser.JavaInfoParser.parse(JavaInfoParser.java:321)
at com.swtdesigner.gef.DesignerEditor.parseCompilationUnit(DesignerEditor.java:1191)
at com.swtdesigner.gef.DesignerEditor.refreshDesignView(DesignerEditor.java:1277)
at com.swtdesigner.gef.DesignerEditor$15.widgetSelected(DesignerEditor.java:1000)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
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:386)
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:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)

Full stack trace (to see full context):
org.apache.commons.lang.exception.NestableError: org.apache.commons.lang.exception.NestableError: com.swtdesigner.properties.PropertyException: java.lang.reflect.InvocationTargetException
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.isComponentCreation(JavaInfoParser.java:3879)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.endVisit(JavaInfoParser.java:1895)
at org.eclipse.jdt.core.dom.MethodInvocation.accept0(MethodInvocation.java:247)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2525)
at org.eclipse.jdt.core.dom.VariableDeclarationFragment.accept0(VariableDeclarationFragment.java:225)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2548)
at org.eclipse.jdt.core.dom.VariableDeclarationStatement.accept0(VariableDeclarationStatement.java:273)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2548)
at org.eclipse.jdt.core.dom.Block.accept0(Block.java:136)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2525)
at org.eclipse.jdt.core.dom.MethodDeclaration.accept0(MethodDeclaration.java:502)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.visit(JavaInfoParser.java:3089)
at org.eclipse.jdt.core.dom.TypeDeclaration.accept0(TypeDeclaration.java:467)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2548)
at org.eclipse.jdt.core.dom.CompilationUnit.accept0(CompilationUnit.java:214)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2478)
at com.swtdesigner.model.parser.JavaInfoParser.parse(JavaInfoParser.java:321)
at com.swtdesigner.gef.DesignerEditor.parseCompilationUnit(DesignerEditor.java:1191)
at com.swtdesigner.gef.DesignerEditor.refreshDesignView(DesignerEditor.java:1277)
at com.swtdesigner.gef.DesignerEditor$15.widgetSelected(DesignerEditor.java:1000)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
Caused by: org.apache.commons.lang.exception.NestableError: com.swtdesigner.properties.PropertyException: java.lang.reflect.InvocationTargetException
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:120)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:97)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:90)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.isComponentCreation(JavaInfoParser.java:3868)
... 50 more
Caused by: com.swtdesigner.properties.PropertyException: java.lang.reflect.InvocationTargetException
at com.swtdesigner.gwt.model.GWTJavaInfoFactory.create(GWTJavaInfoFactory.java:171)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:114)
... 53 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.swtdesigner.gwt.model.GWTJavaInfoFactory.create(GWTJavaInfoFactory.java:163)
... 54 more
Caused by: org.apache.commons.lang.exception.NestableError: org.apache.commons.lang.exception.NestableError: java.lang.reflect.InvocationTargetException
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.classByName(UIObjectInfo.java:193)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.<init>(UIObjectInfo.java:68)
at com.swtdesigner.gwt.model.widgets.WidgetInfo.<init>(WidgetInfo.java:56)
at com.swtdesigner.gwt.model.widgets.panel.AbstractContainerInfo.<init>(AbstractContainerInfo.java:37)
at com.swtdesigner.gwt.model.widgets.panel.PanelInfo.<init>(PanelInfo.java:25)
at com.swtdesigner.gwt.model.widgets.panel.ComplexPanelInfo.<init>(ComplexPanelInfo.java:26)
at com.swtdesigner.gwt.model.widgets.panel.AbsolutePanelInfo.<init>(AbsolutePanelInfo.java:36)
at com.swtdesigner.gwt.model.widgets.panel.RootPanelInfo.<init>(RootPanelInfo.java:23)
... 59 more
Caused by: org.apache.commons.lang.exception.NestableError: java.lang.reflect.InvocationTargetException
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:436)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.classByName(UIObjectInfo.java:191)
... 66 more
Caused by: java.lang.reflect.InvocationTargetException
at com.swtdesigner.gwt.model.widgets.support.GWTState$1.run(GWTState.java:174)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
at org.eclipse.ui.internal.progress.ProgressMonitorJobsDialog.run(ProgressMonitorJobsDialog.java:275)
at org.eclipse.ui.internal.progress.ProgressManager.run(ProgressManager.java:1191)
at com.swtdesigner.gwt.model.widgets.support.GWTState.<init>(GWTState.java:185)
at com.swtdesigner.gwt.model.widgets.support.GWTState.createState(GWTState.java:1875)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:429)
... 67 more
Caused by: java.lang.NoSuchMethodError: com.instantiations.designer.gwt.hosted.IHostedModeSupport.startup(Ljava/lang/String;Ljava/lang/String;Lorg/eclipse/core/runtime/IProgressMonitor;)V
at com.swtdesigner.gwt.model.widgets.support.GWTState$1.run(GWTState.java:164)
... 75 more

Designer Configuration Details:

Product: GWT Designer Subscription
Version: 7.1.0.200907280606
Expected: Eclipse 3.4
Actual: Eclipse 3.4.0.v20080512
Actual Eclipse Build Name:
Actual Eclipse Build ID: M20090211-1700
IDE Actual Name: Eclipse SDK
IDE Actual Version: 3.4.2.v200902111700
IDE Actual NL: fr_CA
Serial Number:
Activation Key:
Physical Address: 00-1A-92-53-55-CE, HardwareAddress[00-07-61-48-12-95], HardwareAddress[00-01-23-45-67-89]
Code Gen: Flat Mode, Use Existing, First Assignment, Make Final
Events: Anonymous Class
GWT Home: C:/Program Files/Google/gwt-windows-1.7.0
Platform Product: Eclipse SDK
Platform Version: 3.4.2.v200902111700
OS Name: Windows XP
OS Architecture: x86
OS Version: 5.1


? What is the problem ?
Thanks.

[Eric Clayberg]

A NoSuchMethodError like that is a clear indication of an incomplete/partial installation.

Re-install or re-update the entire product and you should be fine.

[jldupont]

I installed Eclipse 3.5 because I couldn't get the uninstall/update flows working. After an initial test, it appears to work.

Thanks for the quick turnaround!

[Eric Clayberg]

I'm glad it's working for you.