unable to load cvextern in a c# project

Question

i\'m trying to debug my program, using emgu and HaarCascade in c#. i\'m getting an exception like so :

Unable to load DLL \'cvextern\': The specifie

Answer 1

My problem for this error was that VS2015 was running the web project in 32 bit IIS Express. The fix was to ensure it was using 64 bit IIS Express

I added this code at startup to remind myself when setting up a new machine

if (IntPtr.Size != 8)
{
     throw new Exception("Change VS options to ensure 64bit IIS Express");
}