I had a similar problem a few weeks ago. Come to find out my ignition switch is having an intermitant problem when i would turn the key the voltage was not going to the coil. Are you getting voltage at the coil when the key is turned?
I would check the wiring. I have found out that the ground wires on my car get corroded and rusty and do not make a good connection, especially in the engine compartment.
When changing the points did you make sure that
where the curved spring bolts on to the base plate
that it is fully insulated from the base plate and
that the wire which pulses the coil only contacts to
the spring and not the centre nut and bolt attached
to the base plate.