I'm having the same problem. Did you find a way to correct this problem?
Usually, all that you require for a standalone client is the jbossall-client.jar. This contains most of the normal classes to perform the JNDI lookups as well as handle the EJB interfaces. Many of the other libraries are class subset variations of jbossall-client.jar.
Some more information on how you are connecting as well as the JBoss version you are using would help. Post some code fragments on your client.