No, it's not a license problem. For some reason the segments were not saved correctly, but unfortunately i cannot find what happened exactly.
There are several processes in RailClone that modify segments and parameters on load and save, to convert scenes from previous RC versions and so. I think something failed with that, but is very unusual.
There is not much we can do in this case, because the problem is not traceable. But please, tell me if that happens again.