exception in thread "taskmanager" org.eclipse.emf.common.util.basicelist$basicindexoutofboundsexception: index=405, size=405
	at org.eclipse.emf.common.util.basicelist.get(basicelist.java:352)
	at org.eclipse.emf.ecore.util.econtentselist$featureiteratorimpl.hasnext(econtentselist.java:484)
	at org.eclipse.emf.ecore.util.econtentselist$featureiteratorimpl.next(econtentselist.java:561)
	at org.eclipse.emf.ecore.util.econtentadapter.unsettarget(econtentadapter.java:315)
	at org.eclipse.emf.ecore.util.econtentadapter.unsettarget(econtentadapter.java:287)
	at org.eclipse.emf.ecore.util.econtentadapter.unsettarget(econtentadapter.java:266)
	at org.eclipse.emf.common.notify.impl.basicnotifierimpl$eadapterlist.didremove(basicnotifierimpl.java:99)
	at org.eclipse.emf.common.util.abstractelist.didclear(abstractelist.java:172)
	at org.eclipse.emf.common.util.basicelist.clear(basicelist.java:646)
	at org.eclipse.emf.common.notify.impl.basicnotifierimpl$eadapterlist.clear(basicnotifierimpl.java:184)
	at org.eclipse.emf.ecore.resource.impl.resourceimpl.unloaded(resourceimpl.java:1560)
	at org.eclipse.emf.ecore.resource.impl.resourceimpl.dounload(resourceimpl.java:1619)
	at org.eclipse.emf.ecore.xmi.impl.xmlresourceimpl.dounload(xmlresourceimpl.java:506)
	at org.eclipse.emf.ecore.resource.impl.resourceimpl.unload(resourceimpl.java:1634)
	at org.unicase.emfstore.taskmanager.tasks.cleanmemorytask.unload(cleanmemorytask.java:123)
	at org.unicase.emfstore.taskmanager.tasks.cleanmemorytask.executetask(cleanmemorytask.java:67)
	at org.unicase.emfstore.taskmanager.task.runtask(task.java:61)
	at org.unicase.emfstore.taskmanager.taskmanager.handletask(taskmanager.java:69)
	at org.unicase.emfstore.taskmanager.taskmanager.run(taskmanager.java:50)
