ios - iTunes Connect error for archive uploaded from Xcode 6.3: contains invalid version of Swift -

i built , uploaded app itunes connect using release version of xcode 6.3 last night rejected "invalid binary". email app review said using invalid or beta version of swift. appreciate or ideas how work around problem.

i created app in release version of xcode (6.1 think) worked on in beta versions of 6.3 on last month or so. causing "invalid binary" rejection, though built , uploaded archive in release version of 6.3? if so, can it?

i have tried deleting derived data, revoking certificates, , editing each of app's source code files in release version of 6.3 see if (it didn't).

you using old version of swift. inside xcode there should menu option "upgrade latest version of swift"

this error can occur if using beta version of swift ahead of app store.

if using beta version of xcode, open project in latest release version , try build again. - cannot submit apps compiled in beta app store.

if using old swift - try figure out menu option lets upgrade.

ah this:
"click edit menu, choose convert > swift 1.2."