Animations have stopping working

[SkyboardSoftware]

using Unity 4.3
 http://www.youtube.com/watch?v=78CKcW3mP04

I made a little video of what has happened.  Not all my animations have stopped just one set in paticular.  I am not sure what I should do to make them work again...

you will see in the sprite animation timeline they are all present but when the animation is in the player nothing happens...

edit:

Just found another posting about v2.3.3

line 633 of tk2dSpriteAnimator needs

int currFrame = (currentClip.frames.Length > 1) ? ((int)clipTime % (currentClip.frames.Length + currentClip.frames.Length - 2)) : 0;

for the pingpong to work correctly.  sweet all is good now.