Why my Xcode failed to validate swift iOS project
I was able to resolve it by the following operations in Xcode.
I want to select a target on TARGETS.
I select the Build Phases.
I want to expand the Copy Bundle Resources.
To remove unnecessary files and libraries of the plug-in if it has been registered.
I was having a similar problem - assumed it was a profile/sign issue with XCode 6.0.1 - however, your note to uncheck the 'Include app symbols' fixed the problem for me.
uncheck "Include app symbols for your application to receive symbolicated crash logs from Apple". Organizer -> Submit...