Warning during archive App with iOS 8 Extension in Xcode 6

Check the "Strip Debug Symbols During Copy" option in your Xcode target's build settings. Its saying that it cant strip debug symbols because the extension was already signed.

If you create a brand new sample project and a Today Extension in Xcode 6.2, the default values are set to NO for stripping of debug symbols.

Copied from: https://stackoverflow.com/a/30459703/736384

"Compiled code usually contains debug information. This debug stuff ishelpful for inspecting running code in debugger, but less so for theoptimized code you would ship in distribution builds. Therefore itgets stripped out when doing an Archive build.

The problem here is that PBXCp is unable to strip out debug symbolsfrom signed binaries because this would invalidate the digitalsignature. So if you have a project that was created before Xcode 6.3you will now get a warning like this.

To fix the warning simply change both values to NO. Removing them doesnot work because the default value is still YES for both. The projecttemplates that came with Xcode 6.3 have these turned off by default.Only projects that were started with older templates still have YES onthe Release line."

Source: https://www.cocoanetics.com/2015/04/skipping-copy-phase-strip/