Error: "404: Not Found"

Every time I attempt to update one of my Lists (Collection) by adding Metal Gear Rising: Revengeance I get a "404: Not Found" error.

It should only 404 when you try to reorder lists. If you just add an item (and leave that item in its default position), it should work.

I think the team is aware if this bug... I wish they would fix it soon, though.