Yes and it will be the second time that I explain that registry.gimp.org isn't run by the GIMP team and that we can't easily fix this problem. Perhaps we can finally get around to replace registry.gimp.org with something new. But if you want the current registry to be be fixed, please contact the person that is mentioned in the error message you get when you try to access it.
I'd be interested in working on a new plugin registry if the old one is not going to be resurrected (or it if will remain unmaintained even if it comes back up).
-- brion vibber (brion @ pobox.com)
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