Hi I am developing a Silverlight 4 site which uses RIA Services. I am using a MySQL database hosted on Winhost. When I run my code locally everything works fine. However when I publish to Winhost using Visual Stuido 2010 I get an error, which can be seen by going here: http://germghos.w04.Winhost.com/dev/sldevtestpage.aspx When I go to the URL of the actual service that I am calling, here: http://germghos.w04.Winhost.com/dev/sldev-web-sldevdomainservice.svc I get another error that doesn't really give me much more information. I am new to SL4 and RIA Services, I'm normally a desktop developer, and I don't have a clue as to why this code would work locally and not on the server, unless I am missing an assembly or a config entry somewhere. Can anybody help with this?