It happens.  You find a framework, it’s extremely promising.  Then you hit a problem and it falls apart.  FitLibrary – and by extension FitNesse, since FitLibrary is key to making FitNesse easier to use –  falls apart at the point where you need to change cell comparisons.  There isn’t any documentation out there to tell you where you might start the change, the book doesn’t even apply anymore because FitLibrary has been completely rearchitected in the meantime, and so you are stuck reading framework code sans guidance.  It’s annoying.  I feel like maybe today I’ll crack it, but it has cost me way too much time in the meantime.