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