I am encountering the following error when I try to use the mod_java interface:

2007-11-24 18:38:07 [NOTICE] switch_core_state_machine.c:134 switch_core_standard_on_execute() Execute java(fs_ivr arg1 arg2 arg3)
Exception in thread "Thread-0" java.lang.NoClassDefFoundError: org/freeswitch/Launcher

My dialplan has the following entry:

 <extension name="Validation_Demo">
    <condition field="destination_number" expression="1234">
      <action application="java" data="fs_ivr arg1 arg2 arg3"/>
    </condition>
  </extension>

java.conf.xml has the following entry:

 <options>
    <!-- Your class path (make sure freeswitch.jar is on it) -->
    <option value="-Djava.class.path=/usr/local/freeswitch/scripts/freeswitch.jar"/>
    <option value="-Djava.class.path=/usr/local/freeswitch/scripts/fs_ivr"/>
    <!-- Enable remote debugging -->
    <option value="-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=127.0.0.1:8000"/>
  </options>

I have also tried setting the class path to freeswitch.jar in the CLASSPATH environment variable.

export CLASSPATH=/usr/local/freeswitch/scripts/freeswitch.jar.

None of the permutations have met with success.  Can anyone spot the error I am making?  Any ideas on what to try?

Jonathan