@edford That is good to know. We've also specifically had issues when using bitcode. When building with different versions of Xcode, the linker has either crashed or errored out until we rebuilt one of the missed libraries with the same version of Xcode. The core static library is all prelinked together into a single static library before it is consumed through the Objective C code. Is this something that we'd may no longer see happen now that the bitcode implementation has had time to settle in or would it still be best to always rebuild and use the same version of Xcode?