StackTrace6

!ENTRY org.eclipse.core.resources 4 2 2014-10-17 17:58:11.808 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources". !STACK 0 java.lang.NullPointerException at org.eclipse.emf.common.util.URI.createURIWithCache(URI.java:2567) at org.eclipse.emf.common.util.URI.createURI(URI.java:2445) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl$1.apply(DataManagerImpl.java:402) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl$1.apply(DataManagerImpl.java:1) at com.google.common.collect.Maps.uniqueIndex(Maps.java:1162) at com.google.common.collect.Maps.uniqueIndex(Maps.java:1138) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl.visit(DataManagerImpl.java:398) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:69) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:80) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:80) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:49) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl.resourceChanged(DataManagerImpl.java:388) at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285) at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149) at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:378) at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1498) at org.eclipse.core.internal.resources.File.setContents(File.java:366) at org.eclipse.core.internal.resources.File.setContents(File.java:465) at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl$PlatformResourceOutputStream.flush(PlatformResourceURIHandlerImpl.java:133) at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.writeAscii(XMLSaveImpl.java:1023) at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.save(XMLSaveImpl.java:255) at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doSave(XMLResourceImpl.java:389) at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1430) at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:999) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl.saveContents(DataManagerImpl.java:229) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl.save(DataManagerImpl.java:206) at org.polarsys.reqcycle.repository.data.impl.DataManagerImpl.addRequirementSource(DataManagerImpl.java:148) at org.polarsys.reqcycle.repository.ui.wizard.NewRequirementSourceWizard.performFinish(NewRequirementSourceWizard.java:95) at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:853) at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:438) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:619) 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:4188) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4031) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658) at org.eclipse.jface.window.Window.runEventLoop(Window.java:832) at org.eclipse.jface.window.Window.open(Window.java:808) at org.polarsys.reqcycle.repository.ui.actions.AddRequirementSourceAction.run(AddRequirementSourceAction.java:40) at org.eclipse.jface.action.Action.runWithEvent(Action.java:519) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511) at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:462) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4188) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4031) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658) 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(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) 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) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)