We have detected a last minute bug in the updates of Forest Pack 5.0.6 and RailClone 2.6.1, released this morning.
These updates has been removed until we fix the problem. If you have installed them, please downgrade to the previous versions (FP 5.0.5, RC 2.6.0).
We apologize for any inconvenience. As soon as we fix the problem, we'll uploaded a new update.