EJB Adapter 6.0: erratic behavior

Hi All

I am using:

IS 6.5
Ejb Adapter 6.0
webMethods jvm 1.4.2
Developer 6.5
WebLogic 8.1
Weblogic jvm 1.4

I have an EJB deployed on WebLogic 8.1.This EJB has methods that takes an object as input.I have created this object using java service in developer.

The ejb connection is a locally transacted one and I am using the CreateInvoke template.

The ejb is supposed to send back a response object.
However the ejb only works only on success conditions.

On error condition ,instead of getting a response object