1997 Ford Escort Wagon will not start

I have a 1997 Ford Escort Wagon 2.0 SOHC. About two months ago I discovered one of the core plugs in the cylinder head (on the timing belt end of the motor) was leaking. I first tried using a stop leak product. This did not work. I next replaced the core plug. While driving on the highway yesterday going around sixty-five the engine started making clicking/buzzing noise, the temperature gage began to spike, and then the engine died - all within around two-three minutes. I pulled over, with smoke billowing out of the engine compartment. I discovered the freeze plug had blown out (I assume I installed it incorrectly). I had the car towed home. I removed the radiator cap to discover it was full of the stop leak I used earlier (possibly causing pressure to builld and the freeze plug to blow out. The problem is now the car won't start. I have plenty of battery voltage. The motor turns. I've tested to see that I'm getting spark, which I am. I can hear the fuel pump go on when I try to start the car. I do detect a strong gas odor from the engin compartment. I've check the oil and there doesn't appear to be any antifreeze in it. I know I got antifreeze all over the enging compartment - on the crankshaft sensor - all over the harness that goes to the fuel injectors, etc. However, they are mostly dry now. What do I test next? What am I missing? Please help.