Thread:Extension talk:WikiSEO/WikiSEO compatible with File Caching?/reply

If I understand it correctly, __NOCACHE__ should not be file cache related. It's parser cache related. See my comments below. I guessIt works on your sandbox because you login as admin there（in this case parser cache is not used I think). If you do not login to your sandbox, I bet it will fail the same way as the production server.