Adding thumbnail images to the admin product catalog

[Joseph M]

So, two things I see.. Since you are in the admin trying to look at images, if not mistaken you need to reference the catalog side set of images.. That is offered by using DIR_WS_CATALOG_IMAGES instead of DIR_WS_IMAGES
Next, no still need to use the field name applicable to product images, I rarely reference it and didn't go look it up. If the field within the database is: products_image, then $product['products_image'] should be used..

Removing CATALOG was my alteration, not in the file set, and since corrected in my file. The database uses products_image, so good to keep that.

The existing query does *not* include all fields and it does not include products_image, so products_image has to be added to the select portion of that query.

What/where is the select portion?