I recently inherited a project that contained CoreDragon 0.1.1 (and MeshPipe 0.1.3) via CocoaPods.
After updating pods to the latest version (CoreDragon 0.1.3) and migrating to Xcode 8/Swift 3, I saw this error upon building the project:

Deleting both of the Copy...Public Header build phases in the MeshPipe Target made the build errors go away, but with this new error in DragonController.m: 'MeshPipe/CerfingMeshPipeTransport/CerfingMeshPipe.h' file not found
...Which I fixed by doing this:

Not sure if there's something unique about my setup. I did use "pod install" to remove CoreDragon (and its 4 submodules) and re-add it a number of times before I came to the above solution.