Resolution:
When TIBCO BusinessWorks(TM) Collaborator (BWC) 5.5.1 is used with TIBCO BusinessWorks(TM) 5.9.2, and when a service agent attempts to initiate and create a job, then it throws the following error message:

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2013 Jul 24 11:26:23:981 GMT -4 BW [BW-Core] BWENGINE-100001 com.tibco.pe.plugin.ActivityException.<init>(Lcom/tibco/pe/plugin/TraceMessage;Lcom/tibco/xml/datamodel/XiNode;Ljava/lang/Throwable;)V
    java.lang.NoSuchMethodError: com.tibco.pe.plugin.ActivityException.<init>(Lcom/tibco/pe/plugin/TraceMessage;Lcom/tibco/xml/datamodel/XiNode;Ljava/lang/Throwable;)V
            at com.tibco.workflow.bwserviceagent.WfServiceAgentActivityException.<init>(Unknown Source)
            at com.tibco.workflow.bwserviceagent.WfServiceAgent.init(Unknown Source)
            at com.tibco.pe.core.AgentJobCreator.init(Unknown Source)
            at com.tibco.pe.core.JobPoolConfigurator.do(Unknown Source)
            at com.tibco.pe.core.JobPoolConfigurator.a(Unknown Source)
            at com.tibco.pe.core.JobPoolConfigurator.if(Unknown Source)
            at com.tibco.pe.core.JobPool.<init>(Unknown Source)
            at com.tibco.pe.core.JobPoolCreator.init(Unknown Source)
            at com.tibco.pe.core.JobPoolCreator.<init>(Unknown Source)
            at com.tibco.pe.PEMain.a(Unknown Source)
            at com.tibco.pe.PEMain.do(Unknown Source)
            at com.tibco.pe.PEMain.a(Unknown Source)
            at com.tibco.pe.PEMain.<init>(Unknown Source)
            at com.tibco.pe.PEMain.main(Unknown Source)

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This iscaused due to an API change in BW 5.9.2. This issue is fixed in BWC 5.6.1.