This works perfectly on my breadboard. Why not here?
When the switch is closed, the 555 should provide power on pin3 to charge the capacitor for the trigger. It also lights the LED. When the button is pushed, the voltage rise on the threshold pin should drive pin3 to ground, turning off the light until the voltage on the trigger drops back down to 3V. At this time pin3 outputs power again and relights the LED.
At least that's how it works on my bench.
