I have installed the Admin product images contribution which changes the admin/includes/modules/categories_product_listing.php file to display the product image in admin.

With large images I'm trying to make image handler intercept the zen_image function like it does on the front and show thumbnails rather than the full product listing.

No matter what i seem to do, image handler will not work in admin even though I have tried copying the code for zen_image from the includes/functions/html_output.php file and even manually calling the image handler code that admin/image_handler.php uses to display thumbnails in admin itself. Image Handler php works with thumbnails but nothing else does. It is driving me crazy!

I'm at a loss as to how to make it work - there are no error messages but Image Handler always returns the full image when called from admin, not the bmz_cache path. Has anyone made image handler thumbnail images in admin and if so can they please explain how to do it? Any help would be much appreciated! Hopefully I have posted this question in the right forum.