Are you using swflite for animation?
I don't think it's recommended to use it for animation, it's more useful as a template system.
If your movieclip is not animated (you are using it just for states), there are some bugs with swflite (swf is ok on flash target and I think you can even animate). Sometimes you have to try a different way to embed your states (my own feedback, part MovieClip).
For animation, it's more easy and more performant to use a Spritesheet/Tilesheet or Spriter.