java.lang.NullPointerException: This exception has no message.

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This exception has no message.
java.lang.NullPointerException:
at com.ge.research.sadl.scoping.QualifiedNameProvider.getFullyQualifiedName(QualifiedNameProvider.java:59)
at com.ge.research.sadl.resource.ResourceDescriptionStrategy.createEObjectDescriptions(ResourceDescriptionStrategy.java:39)
at org.eclipse.xtext.resource.impl.DefaultResourceDescription.computeExportedObjects(DefaultResourceDescription.java:89)
at org.eclipse.xtext.resource.impl.DefaultResourceDescription$4.get(DefaultResourceDescription.java:179)
at org.eclipse.xtext.resource.impl.DefaultResourceDescription$4.get(DefaultResourceDescription.java:173)
at org.eclipse.xtext.util.OnChangeEvictingCache.get(OnChangeEvictingCache.java:77)
at org.eclipse.xtext.resource.impl.DefaultResourceDescription.getLookUp(DefaultResourceDescription.java:173)
at org.eclipse.xtext.resource.impl.AbstractResourceDescription.getExportedObjects(AbstractResourceDescription.java:35)
at org.eclipse.xtext.resource.impl.DefaultResourceDescriptionDelta.internalHasChanges(DefaultResourceDescriptionDelta.java:68)
at org.eclipse.xtext.resource.impl.DefaultResourceDescriptionDelta.haveEObjectDescriptionsChanged(DefaultResourceDescriptionDelta.java:58)
at org.eclipse.xtext.ui.editor.DirtyStateEditorSupport.haveEObjectDescriptionsChanged(DirtyStateEditorSupport.java:623)
at org.eclipse.xtext.ui.editor.DirtyStateEditorSupport.announceDirtyState(DirtyStateEditorSupport.java:533)
at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.postParse(XtextDocumentReconcileStrategy.java:179)
at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.doReconcile(XtextDocumentReconcileStrategy.java:153)
at org.eclipse.xtext.ui.editor.reconciler.XtextDocumentReconcileStrategy.reconcile(XtextDocumentReconcileStrategy.java:67)
at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.doRun(XtextReconciler.java:449)
at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.access$3(XtextReconciler.java:429)
at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:363)
at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler$1.process(XtextReconciler.java:1)
at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:37)
at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(XtextDocument.java:428)
at org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(XtextDocument.java:162)
at org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(XtextReconciler.java:360)

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