engine light will not turn off

What is your question?

I have been since January trying to get the stupid engine light to go off! I have had an emissions canister replaced and the oxygen sensor replaced...they tell me that the catalytic converter does not need replacing. My inspection is due in October... I have spent over a thousand dollars trying to solve this problem. I can't use the cruise control as it flashes continually...I am so frustrated. Anyone out there have any ideas? Thank you for any light you can shed on this!!!