Thanks for the suggestions. I had a chance to take a good look at it tonight and the outer chain ring was bent. This fixed most of the problem, but the front derailer would still throw the chain off the outboard side of the cranks. Since I finally had it on the stand, I could see it at a new angle and figured out that the chainline is awful. I apparently chose a bottom bracket spindle that was too long. Hopefully one more trip to the co-op will have this bike ready to go.

When I do crank down the bolts on the new spindle, do I really just crank as hard as I can? I'm a 200-lb rock-climber in my free time, so I can crank a wrench pretty hard. I've heard warnings about splitting crank arms by turning too hard.