Entered a known *spoiler* infested system without active sensors on. I knew what planet their mothership was orbitting, but 40-50 of their smaller ships met me very close to the jump point. The first I knew of their existence is when they blew up my leading scout. Luckily, it was a few million KM's ahead of the main body so I was able to engage them fairly quickly. They managed to cripple one of my carriers. . . when it slowed down, it was automatically placed in a different task group. But, due to a bug in fleet management software, 4 taskgroups were created, 3 of which were empty. I went to delete the empty taskgroups, and deleted the wrong one. My carrier vanished in a flash of light, never to be seen or heard from again.
Did manage to pull through, with the loss of one scout, one carrier, and two close range gauss-equipped escorts. Lesson learned. . . if you know the enemy is waiting for you, dont rush in blindly. Also, don't delete taskgroups without double-checking its empty, or your ships will transit to another universe never to return.