I've had issues with the turn button disappearing forceing me to restart from my last save. Also When starting a war with another race, if you attack using a Terror Star and you have spys on a planet in that system, the game crashes.
GalCiv2 Forums
The following would be good additions: 1. Spy on Minor Races. 2. Reusable Troop Ships. 3. Minor races able to become major races. 4. Instead of just being able to destroying solar systems, have the ablity to both build stars and planets. Also thae abilty to just destroy a planet instead of the whole system. 5. Have the planets rotate around their stars. 6. Able to give group tasks to planets like you can with ships. 7. Mass purchasing of ships or buildings. 8. Ins