EmguCV CalibrateCamera - EntryPointNotFoundException

I'm trying to get EmguCV's CalibrateCamera function to work so that I can estimate the camera position off of points on a planar surface.

this is a snippet of my code with four 3D pseudo positions for testing positions in my scene and four 2D pseudo positions)

 Emgu.CV.Structure.MCvPoint3D32f[][] objectPoints = { new MCvPoint3D32f[4] };
         for (int i = 0; i < cornerPoints.Length; i++)
         {
             Vector3 pos = cornerPoints [i].transform.position;
             objectPoints [0] [i] = new MCvPoint3D32f(pos.x, pos.y, pos.z);
         }
 
         int x1 = 50;
         int y1 = 50;
         int diff = 10;
 
         PointF[][] imagePoints = { new PointF[4] };
         imagePoints [0] [0] = new PointF(-x1, y1);
         imagePoints [0] [1] = new PointF(x1, y1);
         imagePoints [0] [2] = new PointF(-x1 - diff, -y1);
         imagePoints [0] [3] = new PointF(x1 + diff, -y1);
         
 
         IntrinsicCameraParameters cameraParams = new IntrinsicCameraParameters();
 
 System.Drawing.Size imgSize = new System.Drawing.Size(640,480);
         ExtrinsicCameraParameters[] extrinsicParams = new ExtrinsicCameraParameters[1];
         Emgu.CV.CameraCalibration.CalibrateCamera(objectPoints, 
                                                   imagePoints, 
                                                   imgSize, 
                                                   cameraParams, 
                                                   Emgu.CV.CvEnum.CALIB_TYPE.CV_CALIB_FIX_ASPECT_RATIO, 
                                                   new MCvTermCriteria(0.05),
                                                   out extrinsicParams);

unfortunately that's the error I get and I have no idea how to solve it

EntryPointNotFoundException: mono_win32_compat_CopyMemory Emgu.CV.CameraCalibration.ToMatrix[MCvPoint3D32f] (Emgu.CV.Structure.MCvPoint3D32f[][] data) Emgu.CV.CameraCalibration.CalibrateCamera (Emgu.CV.Structure.MCvPoint3D32f[][] objectPoints, System.Drawing.PointF[][] imagePoints, Size imageSize, Emgu.CV.IntrinsicCameraParameters intrinsicParam, CALIB_TYPE calibrationType, MCvTermCriteria termCriteria, Emgu.CV.ExtrinsicCameraParameters[]& extrinsicParams) MyCameraCalibration.Start () (at Assets/CVKinect/Scripts/EmguCV/MyCameraCalibration.cs:76)

it would be great if someone could help me with that. I'm using 4.6.0f3 on win8 64bit