taghid

I have accepted a mission to "Test LFB KR-1x2 Twin Boar Liquid Fuel Engine orbiting Kerbin". The requirements of the contract include reaching orbit around Kerbin and an altitude of 530km to 540km. Twice I've had all of the objectives met during the mission and everything is marked "green", yet when I return to Kerbal, the mission is incomplete. I am obviously missing something, but I don't have any idea what it might be.