First of all, this is a great, much needed plugin, so thanks!
However, I have needed to move my site and this resets the custom thumbnails!
I am using wp 3.5.1 with custom post types, custom fields, and a custom thumbnail size of 180x180.
I have just about exhausted my knowledge and haven't found a way of retrieving the custom thumbnails.
Are the custom thumbails saved on top of the original thumbnails?, because I have tried copying over the whole uploads folder to the new site, and this displays the correct images, but still defaults the thumbnails. I should mention that although the images are correct, they do not display until I update each post individually (if you could help me with this, too, I would appreciate it :)).
So, can you think of anyway that I can preserve the custom thumbnails whilst changing server?
Thanks in advance!