JMS Modular Input: message_handler_impl setting not calling associated jar

[jpressley_splun]

I am having an issue JMS Modular input the following are my settings for inputs.conf. The issue i am having is that it appears that the message_handler_impl setting is not being triggered. Does anyone have any ideas as to why this may be happening

[jms://queue/REDACTED]
browse_mode = all
browse_queue_only = 0
durable = 0
index_message_header = 0
index_message_properties = 1
init_mode = jndi
jms_connection_factory_name = REDACTED_JNDI
jndi_initialcontext_factory = com.sun.jndi.fscontext.RefFSContextFactory
jndi_provider_url = file:/splunk/etc/apps/jms_ta/JNDI-Directory/REDACTED
sourcetype = queue_data
strip_newlines = 1
disabled = 0
browse_frequency = -1
index = queue_index
message_handler_impl = com.splunk.modinput.jms.custom.handler.JMSConvertToBinary
message_handler_params = msg.format.dir=/splunk/etc/apps/jms_ta/data

[jpressley_splun]

No, unfortunately there are not logs for this issue being generated. I have also experimented with various jars some of which are only calling the DefaultMessageHandler through object reference, to no avail.

[Damien_Dallimor]

Any logs ?

index=_internal ExecProcessor error jms.py