Create a new ejb module (JavaEE5)
Create new message driven bean in package "test", accept default name "NewMessage".
Create a second message driven bean in package test, same default name offered,
"NewMessage", accept it and hit finish.

The wizard will close, a small message dialog of some sort will quickly flash
and no other information will be reported to user.  There are now, however, 3
exceptions in the NetBeans (see attachment).

Best resolution -- propose a name in the wizard that is valid.
Also, if the name is invalid, either because the proposed name is a duplicate,
or the user changes it to be a duplicate, there should be an inline error
indicating such and the wizard should not allow completion.

2nd best resolution -- at least indicate to the user that creation failed and
why -- this is a poor 2nd though.