a multi-threaded PDF conversion exception(Conversion service:WatchedFolder)

hi,     

     have multi-threaded conversion exception(conversion service:watchedfolder)

       

     some can converted successfully, , reported following error

 

     exception information follows

     alc-pdg-16004-000: com.adobe.livecycle.generatepdf.client.conversionexception: alc-pdg-016-004-an      error  was  encountered while processing microsoft word file pdf generation.
@ com.adobe.pdfg.bmccaller.checkresult(bmccaller.java:377)
@ com.adobe.pdfg.native2pdfcaller.callnativebmc(native2pdfcaller.java:1078)
@ com.adobe.pdfg.native2pdfcaller.createpdf(native2pdfcaller.java:382)
@ com.adobe.pdfg.generatepdfimpl.createpdfinternal(generatepdfimpl.java:501)
@ com.adobe.pdfg.generatepdfimpl.createpdfcommon(generatepdfimpl.java:280)
@ com.adobe.pdfg.generatepdfimpl.createpdf(generatepdfimpl.java:232)
@ sun.reflect.nativemethodaccessorimpl.invoke0(native method)
@ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:45)
@ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:37)
@ java.lang.reflect.method.invoke(method.java:599)
@ com.adobe.idp.dsc.component.impl.defaultpojoinvokerimpl.invoke(defaultpojoinvokerimpl.jav a:118)
@ com.adobe.idp.dsc.interceptor.impl.invocationinterceptor.intercept(invocationinterceptor. java:140)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.interceptor.impl.documentpassivationinterceptor.intercept(documentpassi vationinterceptor.java:53)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.transaction.interceptor.transactioninterceptor$1.dointransaction(transa ctioninterceptor.java:74)
@ com.adobe.idp.dsc.transaction.impl.ejb.adapter.ejbtransactionbmtadapterbean.dobmt(ejbtran sactionbmtadapterbean.java:197)
@ com.adobe.idp.dsc.transaction.impl.ejb.adapter.ejslocalstatelessejbtransactionbmtadapter_ 3af08fdf.dobmt(unknown source)
@ com.adobe.idp.dsc.transaction.impl.ejb.ejbtransactionprovider.execute(ejbtransactionprovi der.java:95)
@ com.adobe.idp.dsc.transaction.interceptor.transactioninterceptor.intercept(transactionint erceptor.java:72)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.interceptor.impl.invocationstrategyinterceptor.intercept(invocationstra tegyinterceptor.java:55)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.interceptor.impl.invalidstateinterceptor.intercept(invalidstateintercep tor.java:37)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.interceptor.impl.authorizationinterceptor.intercept(authorizationinterc eptor.java:188)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.interceptor.impl.jmxinterceptor.intercept(jmxinterceptor.java:48)
@ com.adobe.idp.dsc.interceptor.impl.requestinterceptorchainimpl.proceed(requestinterceptor chainimpl.java:60)
@ com.adobe.idp.dsc.engine.impl.serviceengineimpl.invoke(serviceengineimpl.java:121)
@ com.adobe.idp.dsc.routing.router.routerequest(router.java:129)
@ com.adobe.idp.dsc.provider.impl.base.abstractmessagereceiver.routemessage(abstractmessage receiver.java:93)
@ com.adobe.idp.dsc.provider.impl.vm.vmmessagedispatcher.dosend(vmmessagedispatcher.java:22 5)
@ com.adobe.idp.dsc.provider.impl.base.abstractmessagedispatcher.send(abstractmessagedispat cher.java:66)
@ com.adobe.idp.dsc.clientsdk.serviceclient.invoke(serviceclient.java:208)
@ com.adobe.idp.jobmanager.execution.workadapter.abstractexecutablejob.invokerequest(abstra ctexecutablejob.java:127)
@ com.adobe.idp.jobmanager.execution.workadapter.persistentexecutablejob.execute(persistent executablejob.java:60)
@ com.adobe.idp.dsc.workmanager.adapter.unmanagedasynchronousworkadapter.run(unmanagedasync hronousworkadapter.java:39)
@ com.adobe.idp.dsc.workmanager.adapter.websphere.j2wa_work.run(j2wa_work.java:34)
@ com.ibm.ws.asynchbeans.j2eecontext$runproxy.run(j2eecontext.java:268)
@ java.security.accesscontroller.doprivileged(accesscontroller.java:202)
@ com.ibm.ws.asynchbeans.j2eecontext.run(j2eecontext.java:768)
@ com.ibm.ws.asynchbeans.workwithexecutioncontextimpl.go(workwithexecutioncontextimpl.java: 222)
@ com.ibm.ws.asynchbeans.abworkitemimpl.run(abworkitemimpl.java:159)
@ com.ibm.ws.util.threadpool$worker.run(threadpool.java:1527)

  

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http://blogs.adobe.com/livecycle/2010/06/run_livecycle_pdf_generator_es.html

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