Message: Unhandled Error in Silverlight Application An exception occurred during the operation, making the result invalid. Check InnerException for exception details.

Question

after publishing the silverlight application on IIS when i try to brows the application i am getting the following error.

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.2)
Timestamp: Fri, 26 Oct 2012 13:24:50 UTC


Message: Unhandled Error in Silverlight Application An exception occurred during the operation, making the result invalid.  Check InnerException for exception details.   at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
   at SilverlightApplication1.ServiceReference1.getDistinctTypesCompletedEventArgs.get_Result()
   at SilverlightApplication1.ChildWindow1.cs_getDistinctTypesCompleted(Object sender, getDistinctTypesCompletedEventArgs e)
   at SilverlightApplication1.ServiceReference1.Service1Client.OngetDistinctTypesCompleted(Object state)
Line: 1
Char: 1
Code: 0

can somebody please help me to solve this type of error.
Thanks! in adavanced...