I've been devloping my first iOS app in AIR for a few months. Testing on up to 3 devices has gone fine. It's time to submit to the app store. I'm developing for a client who wants the app in their name in the app store. So they set up an Apple iOS developer account and gave me access. When I made a new set of certificates and profiles with the new account the app failed to install on my testing device. I've remade all the certificates multiple times and double checked that I have the correct UUID and am not using a distribution profile.
Is there a problem using someone else's account with keys and certificates made on my mac? What else can I try?