After several frustrating tries at assembling this cart, I asked someone more inclined to build things to put it together.  That person informed me that several of the pieces sent were the wrong ones.  Fortunately, she was able to use extra wood from her own workshop to supplement the missing slat, and bought two screws she said were needed.

If not for her, I would have sent this back.  Having said that, I like the finished product just fine.