Did you re-set the breaker correctly?
Have you tested the outlet? (desk lamp, radio, a/c vibrator, whatever you've got nearby)
Have you tested your timer?
HAve you tried plugging each light individually into a socket on another circuit to test?
If running multiple lights on a circuit that is carrying close to 90% of its maximum rated load, always put the lights on separate timers so that they come on in a staggered fashion and do not both surge at once.

(my guess is that the lights fried your timer, and that triggered the circuit breaker to trip)