Is there a size limitation to converting 3D array from C# to MWNumericArray?

I have a c# application that needs to send some data to Matlab. The data is a 3D array of shorts.

My c# Conversion method looks like so:

public static MWArray ShortArrayToMWArray(short[,,] intArray, int v, int v1, int v2)
        {
            try
            {
                //MWArray MW = new MWNumericArray(intArray);
                //return MW;
                MWNumericArray matrix = null;
                matrix = new MWNumericArray(MWArrayComplexity.Real, MWNumericType.Int8, v, v1, v2);
                matrix = intArray;
                return matrix;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
                return new MWNumericArray();
            }
        }

My array is: {short[532, 512, 512]}. When I send in the whole thing, I get a very bizarre error message:

It's only when I started to play with the sizes that I started to doubt and ask this question. If I send in 1/4 of the array, it does the conversion (1/2 is still the same error):

        // Copy 1/4 of the array into a tmp array    
        Array tmpArray = Array.CreateInstance(typeof(short), originalArray.GetLength(0)/4, originalArray.GetLength(1)/4, originalArray.GetLength(2)/4);
        System.Array.Copy(voxelArray, tmpArray, originalArray.GetLength(0)/4 * originalArray.GetLength(1)/4 * originalArray.GetLength(2)/4);


        MWArray mwVol = MatlabUtils.ShortArrayToMWArray((short[,,])tmpArray, originalArray.GetLength(0) / 4, originalArray.GetLength(1) / 4, originalArray.GetLength(2) / 4);

I'm guessing I'm doing the conversion wrong, but not sure.

Thanks