Normally my theme generates several thumbnails including 1024x160, 250x166, 300x199, 600x399.
When WordPress Related Posts is activated 2 sets of thumbnails are generated. e.g.
"rp_willow-warbler_0003.jpg" (ID 61520)= 1024x160, 150x150, 150x99, 250x166, 300x199, 600x399
"willow-warbler_0003.jpg" (ID 61517)= 024x160, 150x150, 150x99, 250x166, 300x199, 600x399
Which thumbs are needed by WP Related Posts? How can I avoid the duplicate set of thumbnails?
Thanks in advance for your help.