I am having trouble uploading using Application Loader. The message I get is this:

I have:
- Deleted the certificates from Keychain Access
- Deleted the provisioning profiles from the folder I keep them in
- Online (developer.apple.com/account/ios), I have created new:
- Development certificate
- App ID
- Provisioning profile
- I have then opened Xcode and using: Xcode->Preferences->Account->View Details...->Refresh I have refreshed the list of provisioning profiles on my machine. This is reflected in the profile manager online.
I still get the message in the dialog above when attempting to upload.
Can anyone help me? Did I miss a step or is there a folder I need to clean out that I may not know about?