I tried it today, and the "load collection" feature doesn't appear to be working on en.wikibooks. I've tried with several saved collections, and none of them will load. I don't remember the last time I tried to do it, it may have been before the flaggedrevs extension was installed. Any ideas on what might be causing this? Is this error happening for anybody else?

I tried it today, and the "load collection" feature doesn't appear to be working on en.wikibooks.