ERROR: Unexpected Error (Client Error)

Hi,
Recently I am facing issue in report execution. Reports are failing inermediately with below errors. Can anyone help me to fix this ?


INFO–Creating Report Net Connection and Running Report
ERROR: Unexpected Error (Client Error)
java.lang.RuntimeException: Client Error
.at com.cognos.crnhelper.ReportNetFacade.executeReportBySpecOrPath(ReportNetFacade.java:232)
.at com.cognos.crnhelper.ReportNetFacade.executeReportByPath(ReportNetFacade.java:185)
.at com.gmac.crn.script.twsScript.generateReport(twsScript.java:542)
.at com.gmac.crn.script.twsScript.main(twsScript.java:176)
Caused by: Client Error
.at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder.java:260) .at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:169) .at org.apache.axis.encoding.DeserializationContextImpl.endElement(DeserializationContextImpl.java:1015)
.at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
.at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
.at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
.at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) .at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
.at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
.at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
.at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
.at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
.at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:242) .at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:538)
.at org.apache.axis.Message.getSOAPEnvelope(Message.java:376)
.at org.apache.axis.client.Call.invokeEngine(Call.java:2583)
.at org.apache.axis.client.Call.invoke(Call.java:2553)
.at org.apache.axis.client.Call.invoke(Call.java:2248)
.at org.apache.axis.client.Call.invoke(Call.java:2171)
.at org.apache.axis.client.Call.invoke(Call.java:1691)
.at com.cognos.developer.schemas.bibus._3.CognosReportNetBindingStub.wait(CognosReportNetBindingStub.java:7584) .at com.cognos.crnhelper.ReportNetFacade.executeReportBySpecOrPath(ReportNetFacade.java:215)
… 3 more
ErrorCode = 15

= Exit Status : 15
= System Time (Seconds) : 0 Elapsed Time (Minutes) : 17
= User Time (Seconds) : 0
= Wed 5/8/2013 1:24:31 PM Eastern Daylight Time