Silverlight 2 Beta 2

I had a Silverlight 2 Beta 1 control that was calling a WCF service. Now after upgrading to Beta 2, there is an error being thrown on the AsyncCallback. The crossdomain.xml and clientaccesspolicy.xml haven't been changed.

Here is the error:

System.Reflection.TargetInvocationException was unhandled by user code
  Message="An exception occurred during the operation, making the result invalid.  Check InnerException for exception details."
  StackTrace:
       at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
       at Silverlight.AnalysisViewer.AnalysisConfigurationService.AnalysisConfigurationLoadCompletedEventArgs.get_Result()
       at Silverlight.AnalysisViewer.Page.AnalysisConfigurationLoadCompleted(Object sender, AnalysisConfigurationLoadCompletedEventArgs e)
     &n ...