Serialising array of strings

[pledge]

I have been trying to get an array of strings passed to and from my web service. I have been following the wiki guide for creating a bean for my array.

package com.ccmdigital.samples.ews.types;

public class StringArray {
 private String[] stringArray;

 public String[] getStringArray() {
 return stringArray;
 }

 public void setStringArray(String[] stringArray) {
 this.stringArray = stringArray;
 }
}

I have then created a ws4ee deployment descriptor

 <deployment
 xmlns='http://xml.apache.org/axis/wsdd/'
 xmlns:java='http://xml.apache.org/axis/wsdd/providers/java'
 xmlns:soap='http://schemas.xmlsoap.org/soap/encoding/'
 xmlns:xsi='http://www.w3.org/2000/10/XMLSchema-instance'
 xmlns:xsd='http://www.w3.org/2001/XMLSchema'>

 <typeMapping
 qname='ns2:echoStringArray' xmlns:ns2='http://ews.samples.ccmdigital.com/types/arrays/java/lang'
 type='com.ccmdigital.samples.ews.types.StringArray'
 serializer='org.jboss.axis.encoding.ser.BeanSerializerFactory'
 deserializer='org.jboss.axis.encoding.ser.BeanSerializerFactory'
 encodingStyle=''>
 </typeMapping>

 <typeMapping
 qname='ns2:echoStringArrayResponse' xmlns:ns2='http://ews.samples.ccmdigital.com/types/arrays/java/lang'
 type='com.ccmdigital.samples.ews.types.StringArray'
 serializer='org.jboss.axis.encoding.ser.BeanSerializerFactory'
 deserializer='org.jboss.axis.encoding.ser.BeanSerializerFactory'
 encodingStyle=''>
 </typeMapping>

 </deployment>

When I try to deploy this I am getting a class cast exception

10:54:22,968 ERROR [ServiceDeployer] Cannot startup webservice for: EncryptedWebService.war
org.jboss.deployment.DeploymentException: Cannot deploy webservice; - nested throwable: (org.jboss.axis.deployment.wsdd.WSDDException: java.lang.ClassCastException: org.jboss.axis.encoding.ser.BeanSerializerFactory
java.lang.ClassCastException: org.jboss.axis.encoding.ser.BeanSerializerFactory
 at org.jboss.axis.encoding.ser.BaseDeserializerFactory.createFactory(BaseDeserializerFactory.java:269)
 at org.jboss.axis.deployment.wsdd.WSDDService.deployTypeMapping(WSDDService.java:617)
 at org.jboss.axis.deployment.wsdd.WSDDService.initTMR(WSDDService.java:294)

Any ideas what I am doing wrong here?