I just recently switched to AppCode, but havent been able to get the build running.
It is working in XCode.
It fails with "linker command failed with exit code 1". It fails when trying to locate a library (Pod).
It is looking in "/Users/<MyUserName>/Library/Caches/appCode31/DerivedData/...". But they are stored in the Project folder, under, "/Users/<username>/projectfolder/.../Pods" .