Seem to be getting closer to identifying the problem SWFs. It seems to be when a Composition combines SWFs created with different parameters\different versions of Flash.
1. Run R4 and create New Composition
2. Unzip the attached ZIP file (containing 5 SWFS), select them all and drag them into the deck
3. Kaboom. They don't all load.
Drag them all individually into an empty set, and they work. It seems to be the COMBINATION OF SWFs that is causing the problem.
1. antenna_city_silhouette.swf, black_trucks.swf and bomb_raid.swf cannot exist in the same set. Any two of those will work fine together, but not all three. The order of adding the SWFs to the set does not matter. The crash happens when the third SWF of those three is added. I think they are all old Triggermotion SWFs.
2. RLTextDisplay1, black_trucks, bomb_raid seem to work OK, but after clicking between them for a while things stop working. It is still possible to load the SWF as the active clip but its contents no longer display. When dragging bomb_raid.swf to a different layer, sometimes it disappears altogether.
I haven't narrowed it down more than this, but it would be useful if others could try to reproduce this, esp no.1 on their own system.
Cheers
Richard