XMLHelper fails to load XSD referenced in jboss-esb.xml and fails with a misleading error message. -------------------------------------------------------------------------------------------------- Key: JBESB-3778 URL: https://issues.jboss.org/browse/JBESB-3778 Project: JBoss ESB Issue Type: Bug Security Level: Public(Everyone can see) Components: Web Services Affects Versions: 4.10, 4.11 Reporter: Marek Baluch Attachments: server.log, ServicioValidacionDatos.esb In case we have the following ESB definition (please note that the xsd path is not prefixed by '/') {code} <actions faultXsd="ValidacionDatosFault.xsd" ...> {code} deployment will fail with Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog. ... The message is misleading because the XSD file will not be found. The problem lies in the fact that the ValidacionDatosFault.xsd is not prefixed by "/". The URI for that resource will look like "classpath://ValidacionDatosRequest.xsd" and the getPath() method will return an empty string which will be passed as argument to ClassUtil.getResource(String, Class).