I installed version 2.9 b111 now and this skin is running.
Similar problem have more users with my other skins. User ~Skylarc88 find the solution and he wrote in comment: "friend of mine helped me get it working
i could drag and drop available skins in to active skins under advanced options. so it works perfectly. Thanks you :3". He had the same problem, only events and todo lists showed up. (You can read whole discussion under Elegant vertical grid black