Bulk generate magic thumbnail doesnt work

Hi,

Super plugin idea ! Many thanks !

Unfortunatly, it didn’t work for me.

I need to replace all my featured photo. I have been on post list, I have choose them all, and then ask for Bulk generate magic thumbnail.

If the post hasn’t any featured photo, it says “No image for…”
and if there is not, it says “already exist”

Please let me know what to do…