Ok, so I include this command in a startup script:

(wake proceed)

Then I made this script:

(script dormant proceed
(sleep_until (volume_test_objects trig_2 (players))15)
(sound_looping_start sound\music\Brutes\brutes none 1 )
(ai_place go)
)

The game says that 'proceed' is not a valid script name. What?