Hello,
Hmm I know that might cause problem. Actually You need to work with the following code.
$row['image_path']=_PS_ROOT_DIR_."/img/".$tempArray[1];
Here if you know the image path, you need to put the path,
$row['image_path']=YOUR_PRODUCT_IMAGE_PATH;
In my system I can get the product image by the way which I have shown in the code. If you wish you can send me your url Then I may told you what to do.
Thanks,