What can cause “invalid binary” with no email followup from iTunes Connect?

Question

I\'m trying to submit an update of an existing application on behalf of one of my clients, and I\'m getting \"Invalid Binary\" failures from iTunes Connect with no explanati

Answer 1

Use the build & archive tools in Xcode as described in another response here.

For some reason the archive tool triggered something at Apple to send back email telling me what was actually wrong (corrupt PNG file).

My issue? Xcode corrupts some PNG files when it compresses them. Go to Build Settings, look in the Packaging section and set "Compress PNG Files' to no.