After the Krynn started a war with me by invading some of my outer worlds, I attacked some of theirs. However, upon trying to invade, my transports got the error "Cannot Invade. No Genocide Ships." The Krynn are busy taking my worlds and I cannot take them back. I have played several games and not experienced this bug until now. The only difference is that I have researched Biological Warfare (I never have before). May or may not be related.
I am not in the beta opt-in, I have tried verifying all game files, I have restarted multiple times, and I have changed the design of the ship via upgrades. I am still unable to perform any planetary invasions.