Is your client and server classes out of sync? The exception you are getting is that the EJB container cannot determine the method you are calling.
Did you hot-deploy the change? There could be a bug in hot deployment. I'll try it out and get back to you.
I don't think that the client and server are out of sync - I normally do an undeploy, cleandb, redeploy etc.. Sometimes I even stop and start the server.
hey I also got the same problem. actually I tried on 3-4 systems. on some the application is working fine but on 2-3 systems it is giving same error... if anybody got some sol. plz do reply....