I've got a set of BMP EJB's on Jboss3.0.0. I have a finder that looks like:

public class AllocationBean
{
...

public List ejbFindByBlockId(Integer blockId) throws FinderException
{
// do some sql, pull out results....
for(int i = 0; i < result.size(); ++i)
{
AllocationHome home = (AllocationHome)context.getEJBHome();
Allocation alloc = home.findByPrimaryKey((AlloocationPK)result.get(i));
ret.add(alloc);
}

return ret;



All is well, until a client uses a business method on one of the remote objects from the list.
The following exception is then thrown:

-----------------------
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.ServerException: null
Embedded Exception
$Proxy34; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
$Proxy34
java.rmi.ServerException: null
Embedded Exception
$Proxy34; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
$Proxy34
javax.ejb.EJBException: null
Embedded Exception
$Proxy34
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:245)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:220)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:122)
at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)
at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:128)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:108)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:73)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:76)
at org.jboss.proxy.ejb.EntityInterceptor.invoke(EntityInterceptor.java:116)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
at $Proxy3.getData(Unknown Source)
at com.nomura.uk.etc.client.WebInterfaceTest.findByBlockId(WebInterfaceTest.java:204)
at com.nomura.uk.etc.client.WebInterfaceTest.main(WebInterfaceTest.java:130)
java.lang.ClassCastException: $Proxy34
<<no stack trace available>>
-----------------------


Anyone got any ideas?

regards,

HJ