Board Thread:Support Requests - Getting Technical/@comment-3542404-20150523205908

I have a global JS page, which works fine on central, but mysteriously doesn't work on any other wiki.

Any ideas? (And yes I've gone through the whole "refresh your cache" process)

EDIT: u:dev:MessageBlocker/code.js doesn't work outside of Central, but the others do, I think that's the only one which won't do it. 