org.eclipse.emf.ecore.resource.resource$iowrappedexception: the object 'org.unicase.model.document.impl.leafsectionimpl@20a3129d (identifier: _0pleel8hed-dsvdrfmnymq) (creator: unknown, creationdate: mon sep 13 12:29:43 cest 2010) (name: new leaf section, description: null)' is not contained in a resource.
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.endsave(xmlsaveimpl.java:306)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.save(xmlsaveimpl.java:270)
	at org.eclipse.emf.ecore.xmi.impl.xmlresourceimpl.dosave(xmlresourceimpl.java:206)
	at org.eclipse.emf.ecore.resource.impl.resourceimpl.save(resourceimpl.java:1406)
	at org.eclipse.emf.ecore.resource.impl.resourceimpl.save(resourceimpl.java:993)
	at org.unicase.workspace.impl.dirtyresourceset.save(dirtyresourceset.java:47)
	at org.unicase.workspace.impl.projectchangetracker.savedirtyresources(projectchangetracker.java:207)
	at org.unicase.workspace.impl.projectchangetracker.notify(projectchangetracker.java:229)
	at org.unicase.metamodel.impl.projectimpl$2.run(projectimpl.java:427)
	at org.unicase.metamodel.impl.projectimpl.notifyprojectchangeobservers(projectimpl.java:373)
	at org.unicase.metamodel.impl.projectimpl.handleemfnotification(projectimpl.java:430)
	at org.unicase.metamodel.util.projectchangenotifier.notifychanged(projectchangenotifier.java:132)
	at org.eclipse.emf.common.notify.impl.basicnotifierimpl.enotify(basicnotifierimpl.java:280)
	at org.eclipse.emf.common.notify.impl.notificationimpl.dispatch(notificationimpl.java:1033)
	at org.eclipse.emf.common.notify.impl.notificationimpl.dispatch(notificationimpl.java:1038)
	at org.eclipse.emf.common.notify.impl.notifyinglistimpl.remove(notifyinglistimpl.java:724)
	at org.eclipse.emf.edit.command.removecommand.doexecute(removecommand.java:327)
	at org.eclipse.emf.edit.command.abstractoverrideablecommand.execute(abstractoverrideablecommand.java:131)
	at org.eclipse.emf.common.command.compoundcommand.execute(compoundcommand.java:267)
	at org.eclipse.emf.edit.command.deletecommand.execute(deletecommand.java:136)
	at org.eclipse.emf.common.command.basiccommandstack.execute(basiccommandstack.java:84)
	at org.eclipse.emf.transaction.impl.abstracttransactionalcommandstack.basicexecute(abstracttransactionalcommandstack.java:241)
	at org.unicase.workspace.changetracking.commands.emfstoretransactionalcommandstack.basicexecute(emfstoretransactionalcommandstack.java:49)
	at org.eclipse.emf.transaction.impl.transactionalcommandstackimpl.doexecute(transactionalcommandstackimpl.java:63)
	at org.eclipse.emf.transaction.impl.abstracttransactionalcommandstack.execute(abstracttransactionalcommandstack.java:165)
	at org.eclipse.emf.transaction.impl.abstracttransactionalcommandstack.execute(abstracttransactionalcommandstack.java:219)
	at org.unicase.ui.common.commands.deletemodelelementcommand.run(deletemodelelementcommand.java:57)
	at org.unicase.ui.navigator.handler.deletemodelelementhandler.deletemodelelement(deletemodelelementhandler.java:41)
	at org.unicase.ui.navigator.handler.deletemodelelementhandler.execute(deletemodelelementhandler.java:34)
	at org.eclipse.ui.internal.handlers.handlerproxy.execute(handlerproxy.java:294)
	at org.eclipse.core.commands.command.executewithchecks(command.java:476)
	at org.eclipse.core.commands.parameterizedcommand.executewithchecks(parameterizedcommand.java:508)
	at org.eclipse.ui.internal.handlers.handlerservice.executecommand(handlerservice.java:169)
	at org.eclipse.ui.internal.handlers.slavehandlerservice.executecommand(slavehandlerservice.java:241)
	at org.eclipse.ui.internal.handlers.slavehandlerservice.executecommand(slavehandlerservice.java:241)
	at org.eclipse.ui.menus.commandcontributionitem.handlewidgetselection(commandcontributionitem.java:770)
	at org.eclipse.ui.menus.commandcontributionitem.access$10(commandcontributionitem.java:756)
	at org.eclipse.ui.menus.commandcontributionitem$5.handleevent(commandcontributionitem.java:746)
	at org.eclipse.swt.widgets.eventtable.sendevent(eventtable.java:84)
	at org.eclipse.swt.widgets.display.sendevent(display.java:3543)
	at org.eclipse.swt.widgets.widget.sendevent(widget.java:1250)
	at org.eclipse.swt.widgets.widget.sendevent(widget.java:1273)
	at org.eclipse.swt.widgets.widget.sendevent(widget.java:1258)
	at org.eclipse.swt.widgets.widget.notifylisteners(widget.java:1079)
	at org.eclipse.swt.widgets.display.rundeferredevents(display.java:3441)
	at org.eclipse.swt.widgets.display.readanddispatch(display.java:3100)
	at org.eclipse.ui.internal.workbench.runeventloop(workbench.java:2405)
	at org.eclipse.ui.internal.workbench.runui(workbench.java:2369)
	at org.eclipse.ui.internal.workbench.access$4(workbench.java:2221)
	at org.eclipse.ui.internal.workbench$5.run(workbench.java:500)
	at org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)
	at org.eclipse.ui.internal.workbench.createandrunworkbench(workbench.java:493)
	at org.eclipse.ui.platformui.createandrunworkbench(platformui.java:149)
	at org.eclipse.ui.internal.ide.application.ideapplication.start(ideapplication.java:113)
	at org.eclipse.equinox.internal.app.eclipseapphandle.run(eclipseapphandle.java:194)
	at org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.runapplication(eclipseapplauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.start(eclipseapplauncher.java:79)
	at org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:368)
	at org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:179)
	at sun.reflect.nativemethodaccessorimpl.invoke0(native method)
	at sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:39)
	at sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:25)
	at java.lang.reflect.method.invoke(method.java:597)
	at org.eclipse.equinox.launcher.main.invokeframework(main.java:559)
	at org.eclipse.equinox.launcher.main.basicrun(main.java:514)
	at org.eclipse.equinox.launcher.main.run(main.java:1311)
	at org.eclipse.equinox.launcher.main.main(main.java:1287)
caused by: org.eclipse.emf.ecore.xmi.danglinghrefexception: the object 'org.unicase.model.document.impl.leafsectionimpl@20a3129d (identifier: _0pleel8hed-dsvdrfmnymq) (creator: unknown, creationdate: mon sep 13 12:29:43 cest 2010) (name: new leaf section, description: null)' is not contained in a resource.
	at org.eclipse.emf.ecore.xmi.impl.xmlhelperimpl.handledanglinghref(xmlhelperimpl.java:760)
	at org.eclipse.emf.ecore.xmi.impl.xmlhelperimpl.gethref(xmlhelperimpl.java:794)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.savehref(xmlsaveimpl.java:2262)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.writetopelements(xmlsaveimpl.java:638)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.savefeatures(xmlsaveimpl.java:1443)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.saveelementid(xmlsaveimpl.java:2667)
	at org.eclipse.emf.ecore.xmi.impl.xmisaveimpl.writetopobjects(xmisaveimpl.java:90)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.traverse(xmlsaveimpl.java:592)
	at org.eclipse.emf.ecore.xmi.impl.xmlsaveimpl.save(xmlsaveimpl.java:256)
	... 65 more
