Steps to reproduce :

- import the attached project
- open lipsync.unity
- look in NewBehaviourScript.cs, lines 38-40 - observe that after ReplaceClip is called, a mecanim trigger is set and a debug log message is printed
- enter play mode
- select character-test in the scene, and double-click the 'Animation Set' entry in the Animator to inspect the AnimationSet object
- observe that when the GUI buttons are clicked, the Animation Set updates, but the subsequent code does not run - the trigger is not set and the debug log message is not printed.