bad image format exception was unhandled c#

Question

Runtime error message:-


Could not load file or assembly 'MagnaBL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The module was expected to contain an assembly manifest.


 

static void Main()

        {

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);

            Application.Run(new frmLogin());--Error @ this line

        }