I see that this was listed in the latest client patch, but I've had this mission for quite some time, and finally found the bugger and killed it -- but it didn't mark the mission complete... attached screenshot -- you can see in the event window when it was killed, and also the mission window showing 0/1.

--arghh

Okay, it should be properly fixed, unfortunately you won't be able to do the mission until reset because of the fix, but non-the-less! I haven't tested it as I can't rebuild test, but I will... Probably Tuesday.

The change I made in the last patch was changing the requirement. Someone set it to kill a ship with the hull "Mister the Prefect" (which doesn't exist), so I changed it back to the spawner name.

Course, that helps when the spawner name is set correctly.

Sorry for getting it wrong. ^_^