Titanium gives error: Specified Provisioning Profile is invalid or is the wrong type

I can't get Titanium to accept my provisioning profile.

I am using Titanium to build a development app to run on my iPhone and that of two others. I have created the certificates, app ids, and provisioning profiles but when I come to create a package for distributing via iTune I get the error:

"Specified Provisioning Profile is invalid or is the wrong type"

I have tried pretty much every option I can think with respect to ways to build the package and types of provisioning profiles but it consistently fails with this message.

Is there a solution to this problem?