Xcode 4.3.1“找不到此可执行文件的有效配置文件”

Tonight I upgraded from Snow Leopard to Lion, and upgraded to Xcode 4.3.1 (iOS 5.1). And now when I try and run debug mode on my device (iPad) I get "A valid provisioning profile for this executable was not found". I have tried every suggestion in past posts on this issue. I have generated a new certificate. I have set my code signing to use the new certificate. I have updated the provisioning profile to use the new certificate. I have gone into the .pbxproj file and deleted all references to the provisioning profile. I have cleaned and closed Xcode a million times. No matter what I do, I still get the same error when trying to run on the device.Tonight I upgraded from Snow Leopard to Lion, a