I have the same problem with version M. The problem is caused because it's displaying the image from the table virtuemart_product_medias with the lowest 'virtuemart_media_id', but it should be displaying the image with the lowest 'ordering' number.
Hi Milbo, is this what you fixed in the svn? When do you expect version N to be released with this fix? I've never had any luck trying to use the svn.
Thanks,
Chuck