java.lang.IllegalStateException: Can't overwrite cause 求解！

程序说明：我使用一个web程序来监控webservice服务的情况，在获取服务使用信息时发生了如下错误，寻求大侠出手相助！错误信息如下：
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2012-5-29 10:43:54 org.quartz.plugins.history.LoggingJobHistoryPlugin jobToBeExecuted
信息: Job DEFAULT.TestJob2 fired (by trigger DEFAULT.TenSecondInterval) at:  10:43:54 05/29/2012
2012-5-29 10:43:54 org.apache.axis2.deployment.ModuleDeployer deploy
信息: Deploying module: addressing-1.6.0 - file:/F:/workspaces/eclipse/PTMonitorWeb/WEB-INF/lib/axis2-1.6.0.jar
2012-5-29 10:43:54 org.apache.axis2.deployment.ModuleDeployer deploy
信息: Deploying module: addressing-1.6.0 - file:/F:/workspaces/eclipse/PTMonitorWeb/WEB-INF/lib/addressing-1.6.0.mar
java.lang.IllegalStateException: Can't overwrite cause
at java.lang.Throwable.initCause(Throwable.java:320)
at com.ctc.wstx.compat.Jdk14Impl.setInitCause(Jdk14Impl.java:70)
at com.ctc.wstx.exc.WstxException.<init>(WstxException.java:46)
at com.ctc.wstx.exc.WstxIOException.<init>(WstxIOException.java:16)
at com.ctc.wstx.sw.BaseStreamWriter.finishDocument(BaseStreamWriter.java:1681)
at com.ctc.wstx.sw.BaseStreamWriter.close(BaseStreamWriter.java:288)
at org.apache.axiom.util.stax.wrapper.XMLStreamWriterWrapper.close(XMLStreamWriterWrapper.java:46)
at org.apache.axiom.om.impl.MTOMXMLStreamWriter.close(MTOMXMLStreamWriter.java:188)
at org.apache.axiom.om.impl.llom.OMSerializableImpl.serializeAndConsume(OMSerializableImpl.java:197)
at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:74)
at org.apache.axis2.transport.http.AxisRequestEntity.writeRequest(AxisRequestEntity.java:84)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:499)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2114)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1096)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:621)
at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:193)
at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:75)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:404)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:231)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:406)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
at org.wso2.carbon.authenticator.stub.AuthenticationAdminStub.login(AuthenticationAdminStub.java:658)
at esbmgr.AuthenticationClient.login(AuthenticationClient.java:45)
at esbmgr.AdminClient.<init>(AdminClient.java:41)
at esbmgr.StatisticsClient.<init>(StatisticsClient.java:19)
at Servicemon.ServicemonTask.setServiceMon(ServicemonTask.java:135)
at Servicemon.ServicemonTask.execute(ServicemonTask.java:57)
at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:557)
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