LoaderException v. 3.11

Dec 11, 2013 at 12:05 PM
At runtime i get this exception... Any Idea?
{"GenericArguments[0], 'DNA.Web.Data.CoreDbContext', su 'DNA.Data.Entity.UnitOfWorksBase`1[TDBContext]' violates the constraint of type 'TDBContext'.":""} System.Exception {System.TypeLoadException}
Coordinator
Dec 11, 2013 at 12:11 PM
When and how you get this error?