I have getting the following exception when I am running the simple application as pointed here http://java.dzone.com/articles/a-look-inside-jboss-microconta-0 Here is the error Using bootstrap: file:/home/vicky/workspace/DZone_1_0/bootstrap/src/main/resources/META-INF/bootstrap-beans.xml | org.jboss.xb.binding.JBossXBException: Failed to parse source: file:/home/vicky/workspace/DZone_1_0/bootstrap/src/main/resources/META-INF/bootstrap-beans.xml@94,101 | at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:177) | at org.jboss.xb.binding.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:147) | at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:147) | at org.jboss.demos.bootstrap.Main.configure(Main.java:80) | at org.jboss.demos.bootstrap.Main.main(Main.java:45) | Caused by: org.jboss.xb.binding.JBossXBRuntimeException: {urn:jboss:classloading:1.0}classloading not found as a child of {urn:jboss:bean-deployer:2.0}property in sequence: {urn:jboss:bean-deployer:2.0}annotation* {choice}* {wildcard}? | at org.jboss.xb.binding.sunday.unmarshalling.SundayContentHandler.startElement(SundayContentHandler.java:383) | at org.jboss.xb.binding.parser.sax.SaxJBossXBParser$DelegatingContentHandler.startElement(SaxJBossXBParser.java:401) | at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:504) | at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182) | at com.sun.org.apache.xerces.internal.xinclude.XIncludeHandler.emptyElement(XIncludeHandler.java:981) | at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353) | at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2723) | at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:624) | at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116) | at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:486) | at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:810) | at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:740) | at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:110) | at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1135) | at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:536) | at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:173) | ... 4 more | Looks like that there is mismatch of jaxb jars. Can someone point the jar version which I need to use during runtime to run this application? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4252193#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...