A client that’s unhappy for a reason is a problem, a client that’s unhappy though he or her can’t quite put a finger on it is worse. When it’s about controlling hundreds of articles, product pages for web shops, or user profiles in social networks, all of them potentially with different sizes, formats, rules for differing elements things can break, designs agreed upon can have unintend.
Chances are there wasn’t collaboration, communication, and checkpoints, there wasn’t a process agreed upon or specified with the granularity required. It’s content strategy gone awry right from the start but that’s not all that it takes to get things back on track.