Hi,
you'll need to watch out for many possible tweaks that could have corrupted your scene.
-- did you remove Rigidbodies from Go with triggers
-- do you have collider in the way
-- is trigger already inside at start?
In short, within the same project, make a simple scene and verify triggers are still working, if they do, then it's in your scene, not inside PlayMaker Fsm.
Bye,
Jean