Currently a top level directory entry is included in the archives when using the ZipExporter:

/
org/
org/jboss/
org/jboss/jca/
org/jboss/jca/test/
org/jboss/jca/test/embedded/
org/jboss/jca/test/embedded/rars/
org/jboss/jca/test/embedded/rars/simple/
org/jboss/jca/test/embedded/rars/simple/TestConnectionInterface.class
org/jboss/jca/test/embedded/rars/simple/TestActivationSpec.class
org/jboss/jca/test/embedded/rars/simple/TestManagedConnectionFactory.class
org/jboss/jca/test/embedded/rars/simple/MessageListener.class
org/jboss/jca/test/embedded/rars/simple/TestConnection.class
org/jboss/jca/test/embedded/rars/simple/TestManagedConnection.class
org/jboss/jca/test/embedded/rars/simple/TestResourceAdapter.class

should be

org/
org/jboss/
org/jboss/jca/
org/jboss/jca/test/
org/jboss/jca/test/embedded/
org/jboss/jca/test/embedded/rars/
org/jboss/jca/test/embedded/rars/simple/
org/jboss/jca/test/embedded/rars/simple/TestConnectionInterface.class
org/jboss/jca/test/embedded/rars/simple/TestActivationSpec.class
org/jboss/jca/test/embedded/rars/simple/TestManagedConnectionFactory.class
org/jboss/jca/test/embedded/rars/simple/MessageListener.class
org/jboss/jca/test/embedded/rars/simple/TestConnection.class
org/jboss/jca/test/embedded/rars/simple/TestManagedConnection.class
org/jboss/jca/test/embedded/rars/simple/TestResourceAdapter.class