Re: Problem installing a gimp plugin under Fedora 15
just tried it here, and got the same results you get if I try to use the built plug-in included in the gimp lensfun package.
But, if I make my own plug-in from the source, it works.
extract the gimp lensfun archive, change to the gimplensfun-0.2.1 folder, and just run make in that folder as your regular user. Then copy the gimplensfun file it creates into your ~/.gimp-2.6/plug-ins folder.