Entity Framework: Unable to load the specified metadata resource

After reading this answers article and this blog I changed:

  entity.Metadata = @"res://*/Data.System.csdl|res://*/Data.System.ssdl|res://*/Data.System.msl";

To:

  entity.Metadata = "res://*/";

And it works :-)

Answer found on : http://stackoverflow.com/questions/8971698/entity-framework-unable-to-load-the-specified-metadata-resource