Why Magento doesn’t generate cache images again for my old products
magento
Solution
It probably is a permissions error as this has happened to me multiple times as well. Try if `chmod 777 media/catalog/product -R` or `chmod 777 media -R` works then investigate the right non-777 permissions for the aforementioned folders depending on your server setup. You can probably `chown` the media folder to `www-data:www-data` or `apache:apache`. Again, this depends on your server setup.
Problem
I have changed my Magento to new server. The problem is it won’t generate cached images for existing products. All becomes place holder. Only new product created is having cache image. How can I force Magento to use real images in media folder ????