Shatter Effect : Is this a Bug?

Hi
I was using the shatter effect last week (AE CS3, Mac OS 10.5.2, Mac Pro) after not having used it for years. Anyway, I had a layer which I wanted to shatter at the end. So I split the layer where I wanted the effect to occur and added the shatter effect to the end half. However all I could see in the layer was the final state of the shatter effect. Despite being applied to a separate layer (the beginning having been effectively trimmed off with the split) the effect was still being applied from the start of the media! I expected the effect to apply only to the visible footage.
I won't lie and say this didn't cost me a lot of time ... I tried to repeat the effect on another computer... but used the whole clip as a sample and so it worked fine! Then I started ploughing through plug in versions .... I'll leave it there! However when I finally twigged that the effect was always operating on the whole media clip I was able to work around by animating the radius from the clip start to it's IN point on my layer.
Seems odd though.... unworkable on a long clip!
Is this a bug? Or am I missing something fundamental?
Thanks
Lee

Sounds to me like you've missed the most important part of controlling shatter. There's never a need to split a layer. All you have to do is animate the force size, or value, or position to shatter the layer where and when you want it to.
Shatter is based on a real world model. In real life, if you want to shatter something you have to apply a force to an object. In AE you can adjust and animate the size of the force, the position of the force, and the amount of the force. Set size to 0 and nothing will happen. Move the force behind or in front of the layer and nothing will happen. Set the value of the force to 0 and nothing will happen. It's just like real life. By default Force 1 is set to break apart most of your layer. Force 2 is available for a second kick to the pieces.
I've never figured out why most users seem to miss this concept. If force 1 is 0 then there's nothing to make the layer shatter. Just set it to 0, Set the keyframe as a hold keyframe, then move down the time line to where you want the effect to begin and add value to the force 1.
You should also try moving the position of the force or animating the size.

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Shatter Effect : Is this a Bug?

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