Large Flash file not compiling tweens!

I’m wondering if anyone can help???

I have a large Flash presentation consisting of 12 slides. When exporting or previewing the movie all of the tweens appear corrupted. They flicker on the first keyframe - go blank - then display the last keyframe all static. I’m using CS3 on a MacBook Pro 2.4GHZ with 2GB of Ram. I have a dual boot setup and the same thing happens in both OS X and Windows XP.

I’ve found a laborious work around in that if I go into each movieclip, and nested movieclip, move the timeline slider then re-export… that particular tween will then animate correctly. I can go through the entire file and thereby export the SWF with animations in tact… But this takes a lot of time and every time I restart my machine it has to be done again from scratch to export the file… This has happened before on a large Flash file and I reinstalled Flash from scratch and it didn’t fix it.

I’m wondering if this could potentially be a bug relating to how much RAM I have? I sent the file to someone who has 4GB of RAM on their PC and it exports correctly. I will be doing a lot of presentations of this nature and would like to know if there is a way to fix this bug or if it is really related to how much RAM you have and how big the Flash file is??? Any help/insight very much appreciated