check the floor of the drivers side and make sure theres no bits and peices of rubber.

get under your dash, and make sure the rubber stopper high up on the clutch pedal is still there, and that the button on the clutch safety switch is actually getting pressed down when you press on the clutch.

The heat made my rubber peice break apart and it took me 4 days to find the problem. Same problem as you; i can push start it, but nothing when i tried using the key.

 

its not a relay problem i think it has to do something with the ignition its self. i can turn the car off when i turn the key off but it wont start when i turn it. any other possible ideas!!??