Thread:Project:Support desk/Changes affecting InstantCommons function?

Has anything changed in the way Commons feeds to an outside Wiki? All the pictures disappeared from our wiki on Saturday 31 May 2014, with no change in programming (and the host denies changing or limiting anything). All the pictures other than the site's logo are from Commons (and we encourage our users to develop that resource).

It's been so long I can't remember which MediaWiki version we use.