need more info.
Try going to the published rpc endpoints with browser and see if
they're published. Check logs of the web container.
Try to add logging to the client code; log events to Firebug console,
for example.
And check the configuration again - your webapp is configured, working
fine, clean in logs, server is accessible, etc. Also, make sure that
you have not hardcoded entry-point locations in the client code.