Dynamic Text Layer Error

I hope someone can help me. I am naming my layers in my cs3 flash project unique names. And adding Flasheff to movie symbols, and dynamic text symbols, now when I add a new layer it collapses the movie. I am trying to add a dynamic text element to the layer on it's own keyframe and I get this error: ,line 1 5005: Unknown error optimizing byte code.
Can anyone help me figure this out? It seems I can do may 5 or 6 layers using flash eff effects and then any further layers makes the movie collapse, meaning the flasheff rectangles strobe in the corners of the finished movie. When I remove the layer the movie plays perfectly. Any advice would be great. Thanks

5005 and 5003 errors can be resolved very simple. Select the component and the target and put them into a new symbol(F8).
This usually appear when there are too many FlashEff2 components in one stage.