I am using WordPress 3.4.2 and Scissors and Watermark 3.0.
After uploading an image and choosing to add watermark, there is a possibility to check on what image sizes the watermark will be added. I need to add watermarks to my additionally registered image sizes. I have these sizes registered in functions.php:
add_image_size('slideshow', 559, 355, true);
add_image_size('slideshow-home', 240, 155, true);
However, if I check the 'custom' checkbox on the watermark options, no watermark is added to my registered image sizes. If I choose Full size, everything is ok.
So question is: how could I add watermark to my custom registered image sizes?