for me it not work with every answer. but I try TARGETS > Architectures > Debug and add a new row with the plus button, and type 'armv6'(with out '), then click Done.
and finally CMD+B and then right click at PrjectName.app(in Products folder) > Open in Finder > Compress "PROJECT_NAME.APP" (in Debug-iphoneos) > Upload to AppStore
it's my screen setting.
if you have include project please config it all. Hope your help.