Well no wonder it's saying it's blowing it up. You did not follow my instructions!
Read carefully:
Disconnect R1 from pin 3 (the output). As I told you before, this connection should not be there. The ONLY thing Pin 3 of the 555 timer should be connected to is the clock input of the 4017.
Eliminate R4. The way you connected it is not how I told you to connect it earlier.
Connect the following:
- Connect R1 between pin 6 and pin 7.
- Connect a 100k resistor between pin 7 and V+ (12 volt supply). Alternately, since pin 4 and pin 8 of the 555 are connected to V+, you can just connect the resistor to one of them instead of to V+. It is all the same node
That's all you need to do. Try that and see what happens.
Matt