Hi,
You should not play and then go to the second state to play another, this will only play one frame of your first anim.
instead: use "Play Animation with Events" and set the complete event to an event like "DONE", that will make you move to a second state, then you can play another anim.
I tested with tk2d demo "5-animation", I play "demo_once" and the complete event is properly triggered, so you should study how demo_once clip is define, you may have settings that differs on your anims. I can then trigger animation again and it all seemse to work fine.
If you still have problem, don't hesitate sending me a sample, I'll see what's going on.
bye,
Jean