java.lang.reflect.InvocationTargetException at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:398) at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:993) at org.dslforge.xtext.generator.ui.wizard.NewWebEditorFromXtextWizard.performFinish(NewWebEditorFromXtextWizard.java:118) at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:790) at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:423) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:618) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5208) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4542) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4132) at org.eclipse.jface.window.Window.runEventLoop(Window.java:818) at org.eclipse.jface.window.Window.open(Window.java:794) at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:269) at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:290) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:54) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:282) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:264) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:488) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210) at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:353) at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:155) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565) at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5208) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4542) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4132) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) 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:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519) at org.eclipse.equinox.launcher.Main.main(Main.java:1492) Caused by: java.lang.RuntimeException: Could not serialize EObject via backtracking. Constraint: AbstractTokenWithCardinality_ConditionalBranch_Group_PredicatedGroup_Group returns Group: ( ( (guardCondition=Disjunction elements+=AbstractToken+) | (elements+=Group_Group_1_0 elements+=AbstractToken+) | ((predicated?='=>' | firstSetPredicated?='->') elements+=Alternatives) ) (cardinality='?' | cardinality='*' | cardinality='+')* ); Values: predicated(0-1), firstSetPredicated(0-1), elements(1) Semantic Object: Grammar'fr.inria.diverse.models2016.dsl.Program'.rules[28]->ParserRule'rule_Kind'.alternatives->Group URI: platform:/resource/fr.inria.diverse.models2016.dsl/src/fr/inria/diverse/models2016/dsl/Program.xtext Context: Alternatives returns Group at org.eclipse.xtext.serializer.diagnostic.ISerializationDiagnostic$ExceptionThrowingAcceptor.accept(ISerializationDiagnostic.java:131) at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.createSequence(BacktrackingSemanticSequencer.java:480) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence_AbstractTokenWithCardinality_ConditionalBranch_Group_PredicatedGroup(XtextSemanticSequencer.java:484) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence(XtextSemanticSequencer.java:200) at org.eclipse.xtext.serializer.sequencer.AbstractSemanticSequencer.createSequence(AbstractSemanticSequencer.java:67) at org.eclipse.xtext.serializer.acceptor.SequenceFeeder.acceptEObjectRuleCall(SequenceFeeder.java:325) at org.eclipse.xtext.serializer.acceptor.SequenceFeeder.acceptRuleCall(SequenceFeeder.java:352) at org.eclipse.xtext.serializer.acceptor.SequenceFeeder.accept(SequenceFeeder.java:246) at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.accept(BacktrackingSemanticSequencer.java:419) at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.createSequence(BacktrackingSemanticSequencer.java:478) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence_ParserRule_RuleNameAndParams(XtextSemanticSequencer.java:1002) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence(XtextSemanticSequencer.java:292) at org.eclipse.xtext.serializer.sequencer.AbstractSemanticSequencer.createSequence(AbstractSemanticSequencer.java:67) at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:118) at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:142) at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:192) at org.dslforge.xtext.generator.web.parser.GenGrammar.body(GenGrammar.java:203) at org.dslforge.xtext.generator.web.parser.GenGrammar.translate(GenGrammar.java:88) at org.dslforge.xtext.generator.web.parser.GenGrammar.doGenerate(GenGrammar.java:79) at org.dslforge.xtext.generator.DynamicWebProjectFactory.doGenerate(DynamicWebProjectFactory.java:285) at org.dslforge.xtext.generator.DynamicWebProjectFactory.createProject(DynamicWebProjectFactory.java:198) at org.dslforge.xtext.generator.AbstractDelegatingWebProjectFactory.createProjects(AbstractDelegatingWebProjectFactory.java:56) at org.dslforge.xtext.generator.ui.wizard.NewWebEditorFromXtextWizard$1.execute(NewWebEditorFromXtextWizard.java:113) at org.eclipse.ui.actions.WorkspaceModifyOperation.lambda$0(WorkspaceModifyOperation.java:107) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2267) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:128) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119) Root exception: java.lang.RuntimeException: Could not serialize EObject via backtracking. Constraint: AbstractTokenWithCardinality_ConditionalBranch_Group_PredicatedGroup_Group returns Group: ( ( (guardCondition=Disjunction elements+=AbstractToken+) | (elements+=Group_Group_1_0 elements+=AbstractToken+) | ((predicated?='=>' | firstSetPredicated?='->') elements+=Alternatives) ) (cardinality='?' | cardinality='*' | cardinality='+')* ); Values: predicated(0-1), firstSetPredicated(0-1), elements(1) Semantic Object: Grammar'fr.inria.diverse.models2016.dsl.Program'.rules[28]->ParserRule'rule_Kind'.alternatives->Group URI: platform:/resource/fr.inria.diverse.models2016.dsl/src/fr/inria/diverse/models2016/dsl/Program.xtext Context: Alternatives returns Group at org.eclipse.xtext.serializer.diagnostic.ISerializationDiagnostic$ExceptionThrowingAcceptor.accept(ISerializationDiagnostic.java:131) at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.createSequence(BacktrackingSemanticSequencer.java:480) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence_AbstractTokenWithCardinality_ConditionalBranch_Group_PredicatedGroup(XtextSemanticSequencer.java:484) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence(XtextSemanticSequencer.java:200) at org.eclipse.xtext.serializer.sequencer.AbstractSemanticSequencer.createSequence(AbstractSemanticSequencer.java:67) at org.eclipse.xtext.serializer.acceptor.SequenceFeeder.acceptEObjectRuleCall(SequenceFeeder.java:325) at org.eclipse.xtext.serializer.acceptor.SequenceFeeder.acceptRuleCall(SequenceFeeder.java:352) at org.eclipse.xtext.serializer.acceptor.SequenceFeeder.accept(SequenceFeeder.java:246) at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.accept(BacktrackingSemanticSequencer.java:419) at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.createSequence(BacktrackingSemanticSequencer.java:478) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence_ParserRule_RuleNameAndParams(XtextSemanticSequencer.java:1002) at org.eclipse.xtext.serializer.XtextSemanticSequencer.sequence(XtextSemanticSequencer.java:292) at org.eclipse.xtext.serializer.sequencer.AbstractSemanticSequencer.createSequence(AbstractSemanticSequencer.java:67) at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:118) at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:142) at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:192) at org.dslforge.xtext.generator.web.parser.GenGrammar.body(GenGrammar.java:203) at org.dslforge.xtext.generator.web.parser.GenGrammar.translate(GenGrammar.java:88) at org.dslforge.xtext.generator.web.parser.GenGrammar.doGenerate(GenGrammar.java:79) at org.dslforge.xtext.generator.DynamicWebProjectFactory.doGenerate(DynamicWebProjectFactory.java:285) at org.dslforge.xtext.generator.DynamicWebProjectFactory.createProject(DynamicWebProjectFactory.java:198) at org.dslforge.xtext.generator.AbstractDelegatingWebProjectFactory.createProjects(AbstractDelegatingWebProjectFactory.java:56) at org.dslforge.xtext.generator.ui.wizard.NewWebEditorFromXtextWizard$1.execute(NewWebEditorFromXtextWizard.java:113) at org.eclipse.ui.actions.WorkspaceModifyOperation.lambda$0(WorkspaceModifyOperation.java:107) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2267) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:128) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)