Hi,
I am also experiencing a similar issue. I have a site which had images on it (most in a nextgen gallery), i’ve then added foogallery and created a couple of galleries manually. It worked fine at first but now when I try to make amendments, very few of our images can be added and I can’t discern a pattern of what allows me to add an image to a foogallery or not. New images I upload don’t work either.
There are no errors being displayed and there are no JS errors either.
Thanks