In this article for the Visual Studio Magazine, Kathleen Dollard tackles a pair of questions relating to cryptic errors produced by Silverlight.
A reader asks: I’m moving a Silverlight project from Visual Studio 2008 to 2010 and the Editable and Display attributes are not found on compile. System.Data.Annotations.dll is referenced and I do have the correct using statements. This is happening in a file that is linked between Silverlight and the server and occurs only on the server. Do you know what’s going on?
Kathleen Answers: Check the target versions of the framework to be sure you’re targeting the correct version. [...]