When I want to edit thumbnails manually a window appears.
On the right I can see the current thumbnail, and on the left there SHOULD (and used to) be a miniature version of the whole picture to crop a thumbnail from.
After the last upgrade of WP and NG (I upgraded them both), the miniature on the left doesn't appear anymore.
I can only see that there is an image missing, with url like: http://MYSITE.COM/wp-content/plugins/nextgen-gallery/nggshow.php?pid=1118&width=350&height=350
It seems that the nggshow.php doesn't generate the miniature properly.
Anybody had similar problems?