iPhone App Submitting: ERROR ITMS-90171: Invalid Bundle Structure (constants.o)

Question

I have done a TON of research and done several things to try and get rid of this error. Absolutely nothing works. =(

When I go to upload my archive to the app store from

Answer 1

In my case an implementation file was in the Copy Bundle Sources section of the Build Phases. I know OP did not have that issue but this helped me.