Error adding images to CImageList(MFC) - c++

Question

I am adding images to a CImageList using the following code:
CImageList ImageList;
ImageList.Create(64, 64, ILC_COLOR32, 0, 1);
Find image path and load image . . .
HBITMAP hBitmap = LoadBitmapFromFile(finder.GetFilePath(), NULL, 64, 64);
int nImage = ImageList.Add(CBitmap::FromHandle(hBitmap), RGB(0,0,0));
HBITMAP LoadBitmapFromFile(const char* pszFilePath, HDC hDC, long lMaxHeight, long lMaxWidth)
{
// Macro that MFC needs to manage its state within a DLL
AFX_MANAGE_STATE(AfxGetStaticModuleState())
// The item object which will be used to read in the file
CxImage image;
// Load the image from the file
if(image.Load(pszFilePath))
{
ResizeImage(image, lMaxHeight, lMaxWidth);
// Get a handle to a bitmap version of the image which the given DC can use
return image.MakeBitmap(hDC);
}
return NULL;
}
void ResizeImage(CxImage& image, long lMaxHeight, long lMaxWidth)
{
const DWORD ulImgHeight = image.GetHeight();
const DWORD ulImgWidth = image.GetWidth();
long nHeightDif = ulImgHeight - lMaxHeight;
long nWidthDif = ulImgWidth - lMaxWidth;
if(nHeightDif > 0 || nWidthDif > 0)
{
double rScaleFactor = 1.0;
if(nHeightDif > nWidthDif)
rScaleFactor = (double)lMaxHeight / (double)ulImgHeight;
else
rScaleFactor = (double)lMaxWidth / (double)ulImgWidth;
long nNewHeight = (long)(ulImgHeight * rScaleFactor);
long nNewWidth = (long)(ulImgWidth * rScaleFactor);
image.Resample2(nNewWidth, nNewHeight);
}
}
The Add method appears to add the image but will repeatedly return the same index value for the new image. When the image list is displayed in a list box, the same image appears for all images that were added and returned the same index, but the filename appearing below the image on the list is correct.
I have tried several things to determine wnat is happening all to no avail. This problem does not appear to be tied to the image size, or shape (h. vs. w.). I have verified that the correct image is attached to the HBITMAP that the image is loaded onto by displaying the image on a picture control, but the image on the list control is incorrect.
If I add the images using:
int nImage = ImageList.Add(CBitmap::FromHandle(hBitmap), (CBitmap *)NULL);
none of the duplicated images are loaded. Instead of the repeating index Add returns -1. I can find no documentation for the errors on a CImageList. Does anyone know what might be happening?