Animated Texture doesn't begin at first frame

Hi, I've been having this problem several times over several projects. I use the Extended Animated Texture script from [here][1] Problem is: I instantiate prefabs with this script, but the animation won't always start at the first frame. Anyone has any idea how to prevent this? [1]: http://wiki.unity3d.com/index.php?title=Animating_Tiled_texture_-_Extended