Nested Field does not have a get method

[gajanan deshpande]

Hi All
I am having such problem during deployment .Why such problem occur while deploynent.
[Container factory] ERROR: Nested Field does not have a get method
[AutoDeployer] Auto deploy of file:/D:/JBossTomcat/JBoss-2.4.1_Tomcat-3.2.3/jboss/deploy/Main_cmp.jar
[J2EE Deployer Default] Deploy J2EE application: file:/D:/JBossTomcat/JBoss-2.4.1_Tomcat-3.2.3/jboss/deploy/Main_cmp.jar
[J2eeDeployer] Create application Main_cmp.jar
[J2eeDeployer] install EJB module Main_cmp.jar
[Container factory] Deploying:file:/D:/JBossTomcat/JBoss-2.4.1_Tomcat-3.2.3/jboss/tmp/deploy/Default/Main_cmp.jar
[Default] Deprecated container invoker. Change to org.jboss.ejb.plugins.jrmp.server.JRMPContainer
Invoker
[Default] Deprecated container invoker. Change to org.jboss.ejb.plugins.jrmp.server.JRMPContainer
Invoker
[Default] Deprecated container invoker. Change to org.jboss.ejb.plugins.jrmp.server.JRMPContainer
Invoker
[Default] Deprecated container invoker. Change to org.jboss.ejb.plugins.jrmp.server.JRMPContainer
Invoker
[Verifier] Verifying file:/D:/JBossTomcat/JBoss-2.4.1_Tomcat-3.2.3/jboss/tmp/deploy/Default/Main_
cmp.jar/ejb1003.jar
[Container factory] Deploying MAIN
[Container factory] ERROR : Nested Field does not have a get method
[ContainerManagement] Initializing
[ContainerManagement] Initialized
[ContainerManagement] Starting
[ContainerManagement] Started
[Container factory] Deployed application: file:/D:/JBossTomcat/JBoss-2.4.1_Tomcat-3.2.3/jboss/tmp/deploy/Default/Main_cmp.jar/
[J2EE Deployer Default] J2EE application: file:/D:/JBossTomcat/JBoss-2.4.1_Tomcat-3.2.3/jboss/deploy/Main_cmp.jar is deployed.

But Ejb is deployed. And when I call create method it gives such exception
The exception occur ============= java.rmi.ServerException: RemoteException occurred in server
read; nested exception is:
javax.transaction.TransactionRolledbackException: null
Embedded Exception
null; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
null
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
javax.transaction.TransactionRolledbackException: null
Embedded Exception
null; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
null
javax.transaction.TransactionRolledbackException: null
Embedded Exception
null; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
null
javax.ejb.EJBException: null
Embedded Exception
null
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:2
45)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:220)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:122)
at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker_Stub.invokeHome(Unknown Source)
at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invokeHome(HomeProxy.java:258)
at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomeProxy.java:182)
at $Proxy0.create(Unknown Source)
at ClientMain.main(ClientMain.java:26)
java.lang.NullPointerException
<<no stack trace available>>

Please suggest me some solution and causes of such errors.
Regard
Gajanana