Edit file File name : xml-core.xml.old Content :<?xml version="1.0"?> <!DOCTYPE catalog PUBLIC "-//OASIS//DTD XML Catalogs V1.0//EN" "file:///usr/share/xml/schema/xml-core/catalog.dtd"> <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> <delegatePublic publicIdStartString="-//OASIS//DTD XML Catalogs V1.0//EN" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/> <delegateSystem systemIdStartString="http://globaltranscorp.org/oasis/catalog/xml/tr9401.dtd" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/> <delegateSystem systemIdStartString="http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd" catalog="file:///usr/share/xml/schema/xml-core/catalog.xml"/> </catalog> Save