Validating error

Hello i have problems with just bought game. Look i just bought a need for speed heat game from steam. But when i wanted to run it it writes me that i have to download an EA app. so i did but when i wanted to run it again when i allredy have downloaded EA app just doesnt work and evry time i wont to start a game from steam it starts to validating. Soo i want to start a game from ea app but it says that i have to download it on steam first.
Can enyone help me?