In setObject() of SpyObjectMessage there is a catch block for IOException. This catch block throws MessageFormatException with a reason of "Object cannot be serialized". Not a very good reason. If the original exception was logged, or chained with the MessageFormatException, at the very least you could find out which field was not serializable.

Suggest a fix like:
catch (IOException e)

{ e.printStackTrace(); MessageFormatException mfe = new MessageFormatException("Object cannot be serialized: " + e.getMessage()); mfe.setLinkedException(e); throw mfe; }

Original stack trace:

javax.jms.MessageFormatException: Object cannot be serialized
at org.jboss.mq.SpyObjectMessage.setObject(SpyObjectMessage.java:88)
at com.elementk.service.event.Event.send(Event.java:55)
at com.elementk.service.event.Event.send(Event.java:77)
at com.elementk.lms.product.Product.update(Product.java:244)
at com.elementk.lms.contentacl.ContentAclSoupToNutsTest.testProductStatusChange(ContentAclSoupToNutsTest.java:408)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at com.elementk.test.UnitTestMBean$UnitTestThread.run(UnitTestMBean.java:280)
at java.lang.Thread.run(Thread.java:534)
2006.06.07 15:27:31.422 EDT ERROR [n/a] [Product.update:247] could not update product in product catalog
java.lang.RuntimeException: Failed to send JMS Message
at com.elementk.service.event.Event.send(Event.java:69)
at com.elementk.service.event.Event.send(Event.java:77)
at com.elementk.lms.product.Product.update(Product.java:244)
at com.elementk.lms.contentacl.ContentAclSoupToNutsTest.testProductStatusChange(ContentAclSoupToNutsTest.java:408)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at com.elementk.test.UnitTestMBean$UnitTestThread.run(UnitTestMBean.java:280)
at java.lang.Thread.run(Thread.java:534)
Caused by: javax.jms.MessageFormatException: Object cannot be serialized
at org.jboss.mq.SpyObjectMessage.setObject(SpyObjectMessage.java:88)
at com.elementk.service.event.Event.send(Event.java:55)

At the time of this defect, this issue has not been reported nor fixed, I checked in version 1.19 of SpyObjectMessage.