Contract Won't Complete

[narf0708]

I just got the game recently, and have been having lots of fun with it. But one of the contracts refuses to be completed, despite having all the criteria for completion met.

Contract: Test TR-18A Stack Decoupler Landed at Kerbin.

Requirements: Landed, Kerbin.

Despite activating the specified module during several tests, most of them with both requirements having a bright green check mark next to them, it refuses to complete the mission. Is there something I am missing here?

[sal_vager]

Check the contract to see how it is meant to be triggered

[narf0708]

It said to activate by the staging controls. That fixed it; thanks. Apparently I need to pay more attention to the details here...

[sal_vager]

Yep, some need to be staged, others right clicked, it'll depend on the contract