Bonjour,

Depuis peu j'ai une erreur lorsque je vais dans l'onglet Design de Window Builder.

Quand je clique sur Go to error ça va sur le FormLayout de mon code.
Internal Error

WindowBuilder encountered unexpected internal error.

This could be caused by a WindowBuilder bug or by a misconfiguration issue, conflict, partial update, etc.

java.lang.Error: new FormLayout(new ColumnSpec[] { FormSpecs.RELATED_GAP_COLSPEC, FormSpecs.DEFAULT_COLSPEC, FormSpecs.RELATED_GAP_COLSPEC, ColumnSpec.decode("default:grow"), FormSpecs.RELATED_GAP_COLSPEC, FormSpecs.LABEL_COMPONENT_GAP_COLSPEC,}, new RowSpec[] { FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, RowSpec.decode("default:grow"), FormSpecs.RELATED_GAP_ROWSPEC, RowSpec.decode("default:grow"), FormSpecs.RELATED_GAP_ROWSPEC, RowSpec.decode("default:grow"), FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC, FormSpecs.RELATED_GAP_ROWSPEC, FormSpecs.DEFAULT_ROWSPEC,})

Hide stack trace.

Stack trace:
java.lang.NullPointerException
at org.eclipse.wb.internal.swing.FormLayout.model.FormDimensionInfo.setFormSpec(FormDimensionInfo.java:430)
at org.eclipse.wb.internal.swing.FormLayout.model.FormDimensionInfo.<init>(FormDimensionInfo.java:49)
at org.eclipse.wb.internal.swing.FormLayout.model.FormColumnInfo.<init>(FormColumnInfo.java:28)
at org.eclipse.wb.internal.swing.FormLayout.model.FormLayoutInfo.initialize(FormLayoutInfo.java:121)
at org.eclipse.wb.core.model.JavaInfo.setObject(JavaInfo.java:1288)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper$3.evaluationSuccessful(JavaInfoEvaluationHelper.java:271)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate0(AstEvaluationEngine.java:179)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate(AstEvaluationEngine.java:61)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluateExpression(JavaInfoEvaluationHelper.java:630)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluate(JavaInfoEvaluationHelper.java:502)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.evaluateNode(JavaInfoParser.java:1309)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$1(JavaInfoParser.java:1300)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor$3.run(JavaInfoParser.java:602)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runRethrow(ExecutionUtils.java:119)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor.postVisit(JavaInfoParser.java:592)
at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.wb.core.eval.ExecutionFlowUtils$1.intercept(ExecutionFlowUtils.java:399)
at org.eclipse.jdt.core.dom.ASTVisitor$$EnhancerByCGLIB$$1e552edf.postVisit(<generated>)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2714)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782)
at org.eclipse.jdt.core.dom.MethodInvocation.accept0(MethodInvocation.java:239)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759)
at org.eclipse.jdt.core.dom.ExpressionStatement.accept0(ExpressionStatement.java:145)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement0(ExecutionFlowUtils.java:354)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement(ExecutionFlowUtils.java:315)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement0(ExecutionFlowUtils.java:336)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement(ExecutionFlowUtils.java:315)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:247)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:228)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:191)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parseRootMethods(JavaInfoParser.java:312)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:268)
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.access$9(DesignPage.java:522)
at org.eclipse.wb.internal.core.editor.DesignPage$8$1.run(DesignPage.java:449)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:156)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4734)
at org.eclipse.wb.internal.core.editor.DesignPage$8.run(DesignPage.java:446)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:527)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:465)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:415)
at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
at org.eclipse.wb.internal.core.editor.DesignPage.refreshGEF(DesignPage.java:392)
at org.eclipse.wb.internal.core.editor.actions.RefreshAction.run(RefreshAction.java:46)
at org.eclipse.wb.internal.core.editor.actions.DesignPageAction.run(DesignPageAction.java:34)
at org.eclipse.wb.internal.core.editor.errors.JavaExceptionComposite.doRefresh(JavaExceptionComposite.java:87)
at org.eclipse.wb.internal.core.editor.errors.ExceptionComposite$3.widgetSelected(ExceptionComposite.java:129)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
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:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)

Full context stack trace:
java.lang.Error: new FormLayout(new ColumnSpec[] {
FormSpecs.RELATED_GAP_COLSPEC,
FormSpecs.DEFAULT_COLSPEC,
FormSpecs.RELATED_GAP_COLSPEC,
ColumnSpec.decode("default:grow"),
FormSpecs.RELATED_GAP_COLSPEC,
FormSpecs.LABEL_COMPONENT_GAP_COLSPEC,},
new RowSpec[] {
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
RowSpec.decode("default:grow"),
FormSpecs.RELATED_GAP_ROWSPEC,
RowSpec.decode("default:grow"),
FormSpecs.RELATED_GAP_ROWSPEC,
RowSpec.decode("default:grow"),
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,
FormSpecs.RELATED_GAP_ROWSPEC,
FormSpecs.DEFAULT_ROWSPEC,})
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate(AstEvaluationEngine.java:71)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluateExpression(JavaInfoEvaluationHelper.java:630)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluate(JavaInfoEvaluationHelper.java:502)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.evaluateNode(JavaInfoParser.java:1309)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$1(JavaInfoParser.java:1300)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor$3.run(JavaInfoParser.java:602)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runRethrow(ExecutionUtils.java:119)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor.postVisit(JavaInfoParser.java:592)
at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.wb.core.eval.ExecutionFlowUtils$1.intercept(ExecutionFlowUtils.java:399)
at org.eclipse.jdt.core.dom.ASTVisitor$$EnhancerByCGLIB$$1e552edf.postVisit(<generated>)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2714)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782)
at org.eclipse.jdt.core.dom.MethodInvocation.accept0(MethodInvocation.java:239)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759)
at org.eclipse.jdt.core.dom.ExpressionStatement.accept0(ExpressionStatement.java:145)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement0(ExecutionFlowUtils.java:354)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement(ExecutionFlowUtils.java:315)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement0(ExecutionFlowUtils.java:336)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitStatement(ExecutionFlowUtils.java:315)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:247)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:228)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:191)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parseRootMethods(JavaInfoParser.java:312)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:268)
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.access$9(DesignPage.java:522)
at org.eclipse.wb.internal.core.editor.DesignPage$8$1.run(DesignPage.java:449)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:156)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4734)
at org.eclipse.wb.internal.core.editor.DesignPage$8.run(DesignPage.java:446)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:527)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:465)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:415)
at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
at org.eclipse.wb.internal.core.editor.DesignPage.refreshGEF(DesignPage.java:392)
at org.eclipse.wb.internal.core.editor.actions.RefreshAction.run(RefreshAction.java:46)
at org.eclipse.wb.internal.core.editor.actions.DesignPageAction.run(DesignPageAction.java:34)
at org.eclipse.wb.internal.core.editor.errors.JavaExceptionComposite.doRefresh(JavaExceptionComposite.java:87)
at org.eclipse.wb.internal.core.editor.errors.ExceptionComposite$3.widgetSelected(ExceptionComposite.java:129)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
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:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
Caused by: java.lang.NullPointerException
at org.eclipse.wb.internal.swing.FormLayout.model.FormDimensionInfo.setFormSpec(FormDimensionInfo.java:430)
at org.eclipse.wb.internal.swing.FormLayout.model.FormDimensionInfo.<init>(FormDimensionInfo.java:49)
at org.eclipse.wb.internal.swing.FormLayout.model.FormColumnInfo.<init>(FormColumnInfo.java:28)
at org.eclipse.wb.internal.swing.FormLayout.model.FormLayoutInfo.initialize(FormLayoutInfo.java:121)
at org.eclipse.wb.core.model.JavaInfo.setObject(JavaInfo.java:1288)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper$3.evaluationSuccessful(JavaInfoEvaluationHelper.java:271)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate0(AstEvaluationEngine.java:179)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate(AstEvaluationEngine.java:61)
... 78 more
Voici le rapport d'erreur WindowBuilder : report-20150427-231101.zip

Quelqu'un saurait-il m'indiquer comment résoudre ce problème ?

Merci d'avance pour votre aide.