A hidden chest

[sx4rlet]

Zone triggers work for me...

In what test mode are you?
When you go to 'test mode' from the editor, you will be in in Adventure Master mode (so you are not a player then, you still can run much faster then normal).

If you then click the icon in the lower left hand corner (its a blue joystick or something that looks like it) you then enter player-test mode.
The zone trigger only happens when you are in player-test mode.

The same is for the attacking of the cut-throats. If you are in Adventure master mode, you cannot attack them.