If a technology doesn't depend (either directly or indirectly) on the science packs it needs, these missing dependecies are added.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Error ModManager.cpp:1625: Difficulty normal: Cycle in technology tree detected. extremely-advanced-rocket-payloads -> space-shuttle -> extremely-advanced-rocket-payloads
Thanks for the report, this should now be fixed with 0.2.14.
