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

The error your receiving is not solely down to cvextern this dll actually points to almost all of the other opencv dlls and all are required. With this error you will require the following dll in your project.

Note that the "220" is the version number this will change according to updates.

• cudart64_32_16.dll
• cufft64_32_16.dll
• cvextern.dll
• npp64_32_16.dll
• opencv_calib3d220.dll
• opencv_contrib220.dll
• opencv_core220.dll
• opencv_features2d220.dll
• opencv_flann220.dll
• opencv_gpu220.dll
• opencv_highgui220.dll
• opencv_imgproc220.dll
• opencv_legacy220.dll
• opencv_ml220.dll
• opencv_objdetect220.dll
• opencv_video220.dll

This error is covered along with others in my article on codeproject here.

Any other problems let me know,

Cheers,

Chris

Answer 2

in my case I had switched to a 64 target and not noticed, going to x86 made this go away