CRMSilverlightDirect-MOD.zip 

Nice Work. Ran first time. I have then started to play around with adding new data to pull from CRM ie websiteurl. If the field is blank it throws a horrible error. It really doesn't like Null. I would have thought it could handle Null data in a field but may not
Also if I create a website in IISAdmin and point it to the project and make the reqd changes to allow the silverlight app download and enter my search critera then it bombs out with a horrible error also. Yet it works fine if I debug it in VS 2008.

Microsoft JScript runtime error: Unhandled Error in Silverlight 2 Application An exception occurred during the operation, making the result invalid. Check InnerException for exception details. at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
at CrmSilverlightDirect.CrmSdk.ExecuteCompletedEventArgs.get_Result()
at CrmSilverlightDirect.Page.Service_ExecuteCompleted(Object sender, ExecuteCompletedEventArgs e)
at CrmSilverlightDirect.CrmSdk.CrmServiceSoapClient.OnExecuteCompleted(Object state)

With the help of this blog post (http://blogs.microsoft.co.il/blogs/alex_golesh/archive/2008/07/22/quick-silverlight-tip-quot-initializeerror-2103-invalid-or-malformed-application-quot-what-is-it-and-how-to-deal-with-it.aspx) I updated the code from http://blogs.msdn.com/lezamax/archive/2008/11/05/sample-silverlight-2-and-crm.aspx and got the app working.