So I'm playing the mini-quest "The Fate of the Sacra" where you go to the Zeta Lynx system and defend a planet of primitives (the Sacra) from a space monster, Hastur. I've defeated Hastur several times, but everytime I do that, the game hangs at a black screen, never returns to game play. The mouse cursor is visible, but the screen remains black. Pressing any keyboard buttons has no effect. I've checked to see if there's any corrupted files, there were, but even after fixing those, it still does the same.