User development, A new message was posted in the thread "Occasional exceptions out of SOAPAddressingPropertiesImpl.writeHeaders": http://community.jboss.org/message/529100#529100 Author : Frank Paaske Profile : http://community.jboss.org/people/frapaa Message: -------------------------------------------------------------- Hi,   Did you manage to solve this problem? I have a similar situation here; first deploy always succeeds, but after a redeploy the following exception prints out in the log:   org.mobicents.servlet.sip.core.dispatchers.DispatcherException: Unexpected exception while processing response : SIP/2.0 200 OK    at org.mobicents.servlet.sip.core.dispatchers.ResponseDispatcher$1.dispatch(ResponseDispatcher.java:314)    at org.mobicents.servlet.sip.core.dispatchers.DispatchTask.dispatchAndHandleExceptions(DispatchTask.java:55)    at org.mobicents.servlet.sip.core.dispatchers.DispatchTask.run(DispatchTask.java:50)    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)    at java.lang.Thread.run(Thread.java:637)Caused by: javax.xml.parsers.FactoryConfigurationError: Provider com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl could not be instantiated: java.lang.IllegalStateException: BaseClassLoader@40be2b01{...} classLoader is not connected to a domain (probably undeployed?) for class com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl    at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:129)    at org.apache.axis.utils.XMLUtils.getDOMFactory(XMLUtils.java:221)    at org.apache.axis.utils.XMLUtils.access$000(XMLUtils.java:75)    at org.apache.axis.utils.XMLUtils$ThreadLocalDocumentBuilder.initialValue(XMLUtils.java:98)    at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:141)    at java.lang.ThreadLocal.get(ThreadLocal.java:131)    at org.apache.axis.utils.XMLUtils.getDocumentBuilder(XMLUtils.java:237)    at org.apache.axis.utils.XMLUtils.newDocument(XMLUtils.java:337)    at org.apache.axis.message.SOAPDocumentImpl.<init>(SOAPDocumentImpl.java:70)    at org.apache.axis.SOAPPart.<init>(SOAPPart.java:1020)    at org.apache.axis.Message.setup(Message.java:377)    at org.apache.axis.Message.<init>(Message.java:246)     Any tips are appreciated!   Thanks,   Frank -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/529100#529100