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java.lang.NullPointerException: 	at org.eclipse.wb.internal.layout.group.model.GroupLayoutParserVisitor2.setSize(GroupLayoutParserVisitor2.java:294)	at org.eclipse.wb.internal.layout.group.model.GroupLayoutParserVisitor2.endVisit(GroupLayoutParserVisitor2.java:123)	at org.eclipse.jdt.core.dom.MethodInvocation.accept0(MethodInvocation.java:241)	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.MethodInvocation.accept0(MethodInvocation.java:234)	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.MethodInvocation.accept0(MethodInvocation.java:234)	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.MethodInvocation.accept0(MethodInvocation.java:234)	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.MethodInvocation.accept0(MethodInvocation.java:234)	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.MethodInvocation.accept0(MethodInvocation.java:234)	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.MethodInvocation.accept0(MethodInvocation.java:234)	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.MethodInvocation.accept0(MethodInvocation.java:234)	at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)	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.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.wb.internal.layout.group.model.GroupLayoutCodeSupport.parseGroup(GroupLayoutCodeSupport.java:119)	at org.eclipse.wb.internal.layout.group.model.GroupLayoutCodeSupport.parse(GroupLayoutCodeSupport.java:97)	at org.eclipse.wb.internal.layout.group.model.GroupLayoutSupport.parse(GroupLayoutSupport.java:184)	at org.eclipse.wb.internal.layout.group.model.GroupLayoutSupport$2.bindComponents(GroupLayoutSupport.java:91)	at sun.reflect.GeneratedMethodAccessor161.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.eclipse.wb.core.model.broadcast.BroadcastSupport$1.intercept(BroadcastSupport.java:208)	at org.eclipse.wb.core.model.broadcast.JavaEventListener$$EnhancerByCGLIB$$e418be7f.bindComponents()	at org.eclipse.wb.internal.core.parser.JavaInfoParser.getRoot(JavaInfoParser.java:404)	at org.eclipse.wb.internal.core.parser.JavaInfoParser.parseRootMethods(JavaInfoParser.java:322)	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:186)	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4761)	at org.eclipse.wb.internal.core.editor.DesignPage$8.run(DesignPage.java:446)	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:463)	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:371)	at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:500)	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:4362)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)	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:669)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)	at org.eclipse.equinox.launcher.Main.main(Main.java:1488)