I get this error when I run my Today extension for iOS:
dyld: Library not loaded: @rpath/libswiftCore.dylib
Referenced from: /Users/andy/Library/Developer/Core
I also met this problem, but Build settings -> "Embeded content contains Swift Code" -> YES invalid
Build settings -> "Embeded content contains Swift Code" -> YES seems to do the trick.
Thanks @dlinsin on twitter
If still not working check this too: https://stackoverflow.com/a/25247890/2184338
mine is:
edit: if still still not: