Use the XML Schema as relational source model importer on pos.xsd in the attached model set. It produces this exception when generating the model.

java.lang.NullPointerException
at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicSet(BasicEObjectImpl.java:558)
at com.metamatrix.modeler.internal.core.ObjectExtension.eDynamicSet(ObjectExtension.java:90)
at com.metamatrix.modeler.modelgenerator.xml.modelextension.impl.BaseXMLRelationalExtensionManagerImpl.setNamespacePrefixesAttribute(BaseXMLRelationalExtensionManagerImpl.java:38)
at com.metamatrix.modeler.modelgenerator.xml.wizards.jdbc.XmlSchemaAsRelationalModelProcessor.setNamespacePrefixesAttribute(XmlSchemaAsRelationalModelProcessor.java:327)
at com.metamatrix.modeler.modelgenerator.xml.wizards.jdbc.XmlSchemaAsRelationalModelProcessor.setTableNamespacePrefixes(XmlSchemaAsRelationalModelProcessor.java:273)
at com.metamatrix.modeler.modelgenerator.xml.wizards.jdbc.XmlSchemaAsRelationalModelProcessor.processNewTable(XmlSchemaAsRelationalModelProcessor.java:96)
at com.metamatrix.modeler.modelgenerator.xml.wizards.jdbc.XmlSchemaAsRelationalModelProcessor.processNewEntity(XmlSchemaAsRelationalModelProcessor.java:75)
at com.metamatrix.modeler.modelgenerator.xml.wizards.jdbc.XmlSchemaAsRelationalModelProcessor.setNameAndNameInSource(XmlSchemaAsRelationalModelProcessor.java:65)
at com.metamatrix.modeler.jdbc.relational.impl.RelationalModelProcessorImpl.createNewObject(RelationalModelProcessorImpl.java:1058)
at com.metamatrix.modeler.jdbc.relational.impl.RelationalModelProcessorImpl.performExecute(RelationalModelProcessorImpl.java:804)
at com.metamatrix.modeler.jdbc.relational.impl.RelationalModelProcessorImpl$1.run(RelationalModelProcessorImpl.java:326)
at com.metamatrix.modeler.internal.core.ModelEditorImpl.executeAsTransaction(ModelEditorImpl.java:547)
at com.metamatrix.modeler.internal.core.ModelEditorImpl.executeAsTransaction(ModelEditorImpl.java:587)
at com.metamatrix.modeler.jdbc.relational.impl.RelationalModelProcessorImpl.executeWithinTransaction(RelationalModelProcessorImpl.java:333)
at com.metamatrix.modeler.jdbc.relational.impl.RelationalModelProcessorImpl.executeWithinTransaction(RelationalModelProcessorImpl.java:311)
at com.metamatrix.modeler.jdbc.relational.impl.RelationalModelProcessorImpl.execute(RelationalModelProcessorImpl.java:302)
at com.metamatrix.modeler.modelgenerator.xml.wizards.XsdAsRelationalImportWizard$1.run(XsdAsRelationalImportWizard.java:504)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:113)