Data Manager job failing when triggered from Cognos connection

[krishna1684]

hi friends ,

i am facing a problem when running a datamanager job from cognos connection. the job is successfully executing however the the status is showing the job failed in cognos connection. but the job log shows the job is executed.
when i checked the cognos connection log files i found the following error.
thanks in advacne for your help please do the need full.

the error is as follows

10.34.100.231:9300   3292   2010-12-30 00:19:49.450   -5               6520   DMS   6023   1   Audit.RTUsage.dms.DMC   Execute   DataMovement   /content/folder[@name='dataMovementTasks']/dataMovementTask[@name='PARAMETER_EXPORT_J']   Success       <trace> DM-DMS-0007 Started the dmrunspec process 2992. </trace>
10.34.100.231:9300   6644   2010-12-30 00:19:49.631   -5   na   na         asyncDMSThread-0   DISP   6017   1   Audit.Other.dispatcher.DISP.pogo   pogo   com.cognos.pogo.dms.DMSHandler      Failure   <messages><message><messageString>DPR-DPR-1035 Dispatcher detected an error.</messageString></message><message><messageString></messageString></message></messages>   DMSHandler.processRequest null java.lang.NullPointerException    at com.cognos.pogo.dms.DMSHandler.processRequestWait(DMSHandler.java:880)    at com.cognos.pogo.dms.DMSHandler.loopWaitUntilDone(DMSHandler.java:1340)    at com.cognos.pogo.dms.DMSHandler.processRequestRun(DMSHandler.java:1186)    at com.cognos.pogo.dms.DMSHandler.processRequest(DMSHandler.java:1390)    at com.cognos.pogo.dms.DMSHandler.asyncInvoke(DMSHandler.java:1971)    at com.cognos.pogo.dms.DMSAsyncService.invoke(DMSAsyncService.java:1158)    at com.cognos.pogo.async.impl.AsyncContextImpl.runRequest(AsyncContextImpl.java:199)    at com.cognos.pogo.async.impl.AsyncRequestThread.run(AsyncRequestThread.java:57)