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org.eclipse.jface.util.Assert$AssertionFailedException: Assertion failed:	at org.eclipse.jface.util.Assert.isTrue(Assert.java:168)	at org.eclipse.jface.util.Assert.isTrue(Assert.java:154)	at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:497)	at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:190)	at org.eclipse.ui.internal.PartPane$2.run(PartPane.java:137)	at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:616)	at org.eclipse.core.runtime.Platform.run(Platform.java:747)	at org.eclipse.ui.internal.PartPane.createChildControl(PartPane.java:133)	at org.eclipse.ui.internal.PartPane.createControl(PartPane.java:205)	at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:939)	at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:921)	at org.eclipse.ui.internal.EditorStack.setSelection(EditorStack.java:196)	at org.eclipse.ui.internal.EditorStack.setVisibleEditor(EditorStack.java:200)	at org.eclipse.ui.internal.EditorAreaHelper.setVisibleEditor(EditorAreaHelper.java:338)	at org.eclipse.ui.internal.EditorAreaHelper.openEditor(EditorAreaHelper.java:268)	at org.eclipse.ui.internal.EditorManager$4.run(EditorManager.java:694)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)	at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:683)	at org.eclipse.ui.internal.EditorManager.openInternalEditor(EditorManager.java:779)	at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:582)	at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:570)	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2244)	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2177)	at org.eclipse.ui.internal.WorkbenchPage.access$6(WorkbenchPage.java:2169)	at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2156)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2151)	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:299)	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:137)	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:110)	at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open(OpenActionUtil.java:49)	at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:164)	at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:150)	at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:212)	at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:188)	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:289)	at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:490)	at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:429)	at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:616)	at org.eclipse.core.runtime.Platform.run(Platform.java:747)	at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:427)	at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:635)	at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:731)	at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:211)	at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:206)	at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:238)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)	at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)	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.core.launcher.Main.basicRun(Main.java:185)	at org.eclipse.core.launcher.Main.run(Main.java:704)	at org.eclipse.core.launcher.Main.eclipse_main(Main.java:688)	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 com.m7.installer.util.NitroxMain$1.run(NitroxMain.java:28)	at java.awt.event.InvocationEvent.dispatch(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)