god knows why, but I removed all galciv2 data from my pc, restarted, reinstalled everything, and now anything works. suggestion: I would like to see at least 2 required techs in the future. I got some ideas for few ship components and planetary improvements, but they would need at least 2 techs before they can be build. So more required categories would be fine and open the path to more complex, cross-tech trees.