I really combed this site and others. I read and re-read the related links here and the Apple docs. I'm sorry, but either I am obviously missing something right under my nose, or this Apple profile/certificate stuff is a bit convoluted. Here it is:

1. I have a product in the App Store.
2. I have updated it several times and users like it.
3. My development profile recently expired just when I was improving the app for its next release.
4. I can run the app in the simulator.
5. I can compile and put the distribution build on my iPhone just fine.
6. I went to the Apple portal and renewed the development profile.
7. I downloaded it and installed it in Xcode.
8. I see it in the Organize window.
9. I see it on my iPhone.
10. I CANNOT put the debug build on my iPhone to debug or run with Instruments. The message is that either there is not a valid signed profile or it is untrusted.
11. I subsequently tried to download and install the certificate to my Mac's keychain.
12. Still no success.
13. I checked the code signing section of Project settings and also for the target and the root. All appears to indicate that it is using the expected development profile for debug.

Yes, I had deleted the old profile from my iPhone, from the Organizer. I cleaned the Xcode cache and all targets. I have done all of this several times and in varying sequences to try to cover every possibility.

I am ready to do anything to be able to debug with Instruments in order to check for leaks or high memory usage. Even though the distribution compile runs fine on my iPhone and plays well with other running processes, I will not release anything without a leaks/memory test.

Any ideas will be appreciated. If I missed something obvious, please forgive me - it was not due to just posting a question without searching for similar postings.

Thanks!