Strange. There is must be empty "Kernels" folder in zip above. Maybe it was not unpacked because it's empty? You can create folder, or just change settings in Phoebe.cfg from "Kernel = Kernels\sat252s.bsp" to your own path to *.bsp file, for example "Kernel = C:\Files\sat252s.bsp".Thanks. There is currently no kernels folder in my Orbiter folder. Am I supposed to create it?