Error connecting to SonicMQ Broker

Hi All,

I have a simple test program, which attempts to connect to a SonicMQ broker, using the -SMQConnect option;

DEFINE VARIABLE ptpsession AS HANDLE.
 
MESSAGE "Attemping connect..." VIEW-AS ALERT-BOX INFORMATION.

/* Creates a session object. */
RUN  jms/ptpsession.p PERSISTENT SET ptpsession ("-SMQConnect").
RUN setBrokerURL IN ptpsession ("192.168.177.180:2506").
RUN SETUSER IN ptpsession ("Administrator").
RUN setPassword IN ptpsession ("Password").
 
RUN beginSession IN ptpsession.

MESSAGE "Completed..." VIEW-AS ALERT-BOX INFORMATION.

The code works fine on our dev environment, and on selected servers (Windows based) on our customers site. However, it fails with error " Error connecting to the JMS AppServer service."  on a HP-UX server.

We've investigated this as potential firewall issue, but I can communicate using telnet to the broker IP address on port 2506.

There is a sonic directory under DLC ($DLC/sonic/MQ7.5/lib).

In my AdminServerPlugins.properties I have the following Sonic related settings, I don't believe any of these have been modified from the default;

#
# 4GL Sonic Adapter plugin - SonicMQ adapter support
#
[Plugin.SonicMQAdapter]
dependency=Plugin.System,Plugin.UBPropMgr
pluginpolicy=PluginPolicy.Progress.SonicMQ
uniquetype=AD
license=1048577
classname=com.progress.ubroker.tools.adapter.AdapterGuiPlugin
pluginargs=SonicMQ Adapter

#
# Policy for the 4GL SonicMQ Adapter
#
[PluginPolicy.Progress.SonicMQ]
pluginclasspath=/int01/progress-progs/progress_oe102b/sonic/MQ7.5/lib/sonic_
Client.jar,/int01/progress-progs/progress_oe102b/sonic/MQ7.5/lib/mgmt_client.jar
,/int01/progress-progs/progress_oe102b/java/ext/actional-sdk.jar,/int01/progress
-progs/progress_oe102b/java/progress.jar
classpath=/int01/progress-progs/progress_oe102b/sonic/MQ7.5/lib/sonic_Client
.jar,/int01/progress-progs/progress_oe102b/java/ext/actional-sdk.jar,/int01/prog
ress-progs/progress_oe102b/java/progress.jar

Running Openedge 10.2BSP7.

Any help in finding out the cause of this error will be appreciated.

Thanks.