Unable to cast object of type 'System.Data.Objects.DataClasses.EntityCollection`1[ENTITY_TYPE]' to type 'System.Collections.Generic.ICollection`1[INSTANCE_TYPE]'.
Where ENTITY_TYPE is the Model class and INSTANCE_TYPE is some other type, perhaps an Interface.
After reading this post 'EntityCollection : ICollection', i determined the best way around this is to change the Type of your collection from ICollection to IEnumerable and then all should be well...
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