org.dom4j.DocumentException: Error on line 3073 of document  : Attribute name "associati" associated with an element type "UML:AssociationEnd" must be followed by the ' = ' character. Nested exception: Attribute name "associati" associated with an element type "UML:AssociationEnd" must be followed by the ' = ' character.
        at org.dom4j.io.SAXReader.read(SAXReader.java:436)
        at org.dom4j.io.SAXReader.read(SAXReader.java:344)
        at org.netbeans.modules.uml.core.support.umlsupport.XMLManip.getDOMDocument(XMLManip.java:185)
        at org.netbeans.modules.uml.core.support.umlsupport.XMLManip.getDOMDocument(XMLManip.java:164)
        at org.netbeans.modules.uml.core.support.umlsupport.URILocator.retrieveDocument(URILocator.java:133)
        at org.netbeans.modules.uml.core.support.umlsupport.URILocator.retrieveNode(URILocator.java:227)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.ExternalFileManager.resolveExternalNode(ExternalFileManager.java:199)
        at org.netbeans.modules.uml.core.typemanagement.TypeManager.resolveExternalNode(TypeManager.java:413)
        at org.netbeans.modules.uml.core.typemanagement.TypeManager.findByID(TypeManager.java:2030)
        at org.netbeans.modules.uml.core.typemanagement.TypeManager.getRawElementByID(TypeManager.java:1967)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.UMLXMLManip.findInProject(UMLXMLManip.java:1637)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.UMLXMLManip.resolveNode(UMLXMLManip.java:267)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.UMLXMLManip.selectSingleNodeByNode(UMLXMLManip.java:363)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.UMLXMLManip.selectSingleNode(UMLXMLManip.java:333)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.ElementCollector.retrieveSingleElement(ElementCollector.java:232)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.ElementImport.getImportedElement(ElementImport.java:137)
        at org.netbeans.modules.uml.core.metamodel.structure.Project.removeElementImport(Project.java:2524)
        at org.netbeans.modules.uml.project.ui.nodes.ImportProjectRootNode.elementDeleted(ImportProjectRootNode.java:120)
        at org.netbeans.modules.uml.project.ui.customizer.UMLImportsUiSupport.fireElementDeleted(UMLImportsUiSupport.java:179)
        at org.netbeans.modules.uml.project.ui.customizer.UMLImportsUiSupport.modelElementDeleted(UMLImportsUiSupport.java:446)
        at org.netbeans.modules.uml.project.ui.customizer.UMLImportsUiSupport$ImportListener.onElementDeleted(UMLImportsUiSupport.java:550)
        at sun.reflect.GeneratedMethodAccessor115.invoke(GeneratedMethodAccessor115.java:0)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.netbeans.modules.uml.core.eventframework.EventFunctor.invokeMethod(EventFunctor.java:237)
        at org.netbeans.modules.uml.core.eventframework.EventFunctor.execute(EventFunctor.java:123)
        at org.netbeans.modules.uml.core.eventframework.EventManager.notifyListeners(EventManager.java:184)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.ElementLifeTimeEventDispatcher.fireElementDeleted(ElementLifeTimeEventDispatcher.java:257)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.VersionableElement.fireDelete(VersionableElement.java:669)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.VersionableElement.fullDelete(VersionableElement.java:617)
        at org.netbeans.modules.uml.core.metamodel.core.foundation.VersionableElement.delete(VersionableElement.java:431)
        at org.netbeans.modules.uml.drawingarea.UMLDiagramTopComponent$DeleteActionPerformer.doDelete(UMLDiagramTopComponent.java:1699)
        at org.netbeans.modules.uml.drawingarea.UMLDiagramTopComponent$DeleteActionPerformer.run(UMLDiagramTopComponent.java:1609)
        at org.openide.util.Mutex$1AWTWorker.run(Mutex.java:1370)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)