cheers..

Yes, it is the problem as I mentioned

When you have UI and Webservices in the same machine, you wont get as what is reproducible in UAT with different servers for webservices and UI...

and also, in DEV the Webservices may be in debug mode too..

Whenever there is any exception, always throw it as a SOAP exception to the UI and catch these exceptions in the UI adn parse them accordingly (by customizing)..

cheers