SWF works with 9.0 r45 and not 9.0 r28 and below

[K2xL]

As the title suggests, I have a SWF that is working with the very latest version of Flash; however, for some reason the Flash doesn't play in less than 9.0 r45, meaning those with 9.0 r28 can't view it!

What on earth did Adobe change from those two versions?

As you can imagine, this problem is incredibly difficult to debug.

[devonair]

http://www.adobe.com/support/documentation/en/flashplayer/9/releasenotes.html#fixes_9045

[K2xL]

Thanks so much! Wow!
The bolded ones below were the ones that affected my movie... Crazy!

-Danny

New ActionScript 3.0 components for Flash CS3 Professional do not function correctly in versions prior to Flash Player 9.0.45.0.
Runtime Shared Libraries (RSLs) exported for ActionScript 3.0 generate a runtime security error. (195395)
Display objects instantiated by the playhead entering a frame because of a gotoAndStop command (or similar action) incorrectly process actions on frame one. (189490)
flash.text.TextField.getCharBoundaries returns a rectangle that is offset to the left by 2 pixels for fields that are created using the Flash CS3 Professional text tool. (193249)