Namespace and Package Name Problem

Hello,
I am trying to assemble a schema from multiple schema documents with different namespaces and then use Castor to generate the classes.
I have created the following schema definition which validates successfully

I have also updated the \org\exolab\castor\builder\castorbuilder.properties file and modified the XML namespace mapping to Java packages as follows:

The problem occurs when I try and generate the classes based on the camera.xsd.
The imported schemas (nikon, olympus, pentax) source files don�t get generated. Instead the source files are all bundled in the com.customobjects.camera package defined for the camera.xsd.

/*
 * This class was automatically generated with 
 * <a href="http://www.castor.org">Castor 0.9.4.3</a>, using an XML
 * Schema.
 * $Id$
 */
package com.customobjects.camera;
  //---------------------------------/
 //- Imported classes and packages -/
//---------------------------------/
import java.io.IOException;
import java.io.Reader;
import java.io.Serializable;
import java.io.Writer;
import org.exolab.castor.xml.MarshalException;
import org.exolab.castor.xml.Marshaller;
import org.exolab.castor.xml.Unmarshaller;
import org.exolab.castor.xml.ValidationException;
import org.xml.sax.ContentHandler;
/**
 * Class Camera.
 * 
 * @version $Revision$ $Date$
 */
public class Camera implements java.io.Serializable {

//--------------------------/
     //- Class/Member Variables -/
    //--------------------------/
    /**
     * Field _mybody
     */
    private com.customobjects.camera.Mybody _mybody;
    /**
     * Field _lens
     */
    private com.customobjects.camera.Lens _lens;
    /**
     * Field _manual_adapter
     */
    private com.customobjects.camera.Manual_adapter _manual_adapter;

//----------------/
     //- Constructors -/
    //----------------/
    public Camera() {
        super();
    } //-- com.customobjects.camera.Camera()

//-----------/
     //- Methods -/
    //-----------/
    /**
     * Method getLensReturns the value of field 'lens'.
     * 
     * @return the value of field 'lens'.
     */
    public com.customobjects.camera.Lens getLens()
    {
        return this._lens;
    } //-- com.customobjects.camera.Lens getLens() 
    /**
     * Method getManual_adapterReturns the value of field
     * 'manual_adapter'.
     * 
     * @return the value of field 'manual_adapter'.
     */
    public com.customobjects.camera.Manual_adapter getManual_adapter()
    {
        return this._manual_adapter;
    } //-- com.customobjects.camera.Manual_adapter getManual_adapter() 
    /**
     * Method getMybodyReturns the value of field 'mybody'.
     * 
     * @return the value of field 'mybody'.
     */
    public com.customobjects.camera.Mybody getMybody()
    {
        return this._mybody;
    } //-- com.customobjects.camera.Mybody getMybody() 
    /**
     * Method isValid
     */
    public boolean isValid()
    {
        try {
            validate();
        }
        catch (org.exolab.castor.xml.ValidationException vex) {
            return false;
        }
        return true;
    } //-- boolean isValid() 
    /**
     * Method marshal
     * 
     * @param out
     */
    public void marshal(java.io.Writer out)
        throws org.exolab.castor.xml.MarshalException, org.exolab.castor.xml.ValidationException
    {
        
        Marshaller.marshal(this, out);
    } //-- void marshal(java.io.Writer) 
    /**
     * Method marshal
     * 
     * @param handler
     */
    public void marshal(org.xml.sax.ContentHandler handler)
        throws java.io.IOException, org.exolab.castor.xml.MarshalException, org.exolab.castor.xml.ValidationException
    {
        
        Marshaller.marshal(this, handler);
    } //-- void marshal(org.xml.sax.ContentHandler) 
    /**
     * Method setLensSets the value of field 'lens'.
     * 
     * @param lens the value of field 'lens'.
     */
    public void setLens(com.customobjects.camera.Lens lens)
    {
        this._lens = lens;
    } //-- void setLens(com.customobjects.camera.Lens) 
    /**
     * Method setManual_adapterSets the value of field
     * 'manual_adapter'.
     * 
     * @param manual_adapter the value of field 'manual_adapter'.
     */
    public void setManual_adapter(com.customobjects.camera.Manual_adapter manual_adapter)
    {
        this._manual_adapter = manual_adapter;
    } //-- void setManual_adapter(com.customobjects.camera.Manual_adapter) 
    /**
     * Method setMybodySets the value of field 'mybody'.
     * 
     * @param mybody the value of field 'mybody'.
     */
    public void setMybody(com.customobjects.camera.Mybody mybody)
    {
        this._mybody = mybody;
    } //-- void setMybody(com.customobjects.camera.Mybody) 
    /**
     * Method unmarshal
     * 
     * @param reader
     */
    public static com.customobjects.camera.Camera unmarshal(java.io.Reader reader)
        throws org.exolab.castor.xml.MarshalException, org.exolab.castor.xml.ValidationException
    {
        return (com.customobjects.camera.Camera) Unmarshaller.unmarshal(com.customobjects.camera.Camera.class, reader);
    } //-- com.customobjects.camera.Camera unmarshal(java.io.Reader) 
    /**
     * Method validate
     */
    public void validate()
        throws org.exolab.castor.xml.ValidationException
    {
        org.exolab.castor.xml.Validator validator = new org.exolab.castor.xml.Validator();
        validator.validate(this);
    } //-- void validate() 
}

This does not map to the information specified in the \org\exolab\castor\builder\castorbuilder.properties.
The definitions for the �Class/Member Variables� are all wrong.
For example, I would expect the Lens type to have a package name of com.customobjects.lens not com.customobjects.camera.lens.
Does anyone know a solution to this problem? Is this a bug in Castor or am I doing something wrong?
Any help would be appreciated.
Thanks you very much!
Claude Jones.