创建iPhone专用发行版时出错

I'm trying to do an ad hoc distribution of my iPhone app to some beta testers. I created the certs, device IDs, provisioning profiles, etc. and followed the instructions on Apple's site regarding how to incorporate them into the build/distribution. When I copy the provisioning profile and app to iTunes and try to sync, I get the following message:I'm trying to do an ad hoc distribution of my i