AS3 deployment sucks?

I have a program that seems to break on about 10% of Flash 9 players - browser doesn’t seem to matter. Upgrading the player will fix it, but I have no idea what the cause is.

Does anyone know of some big bugs that were fixed in certain versions of the Flash 9 player? I’m thinking it has something to do with the new security model, just because it seems like they really screwed that up when they released it.

So far I know that the broken versions are still showing some flash, breaking 100% of the time, making the initial request to the XML feed, sending the proper variables to the XML feed (I did a file_put_contents(‘dump.txt’, print_r($_REQUEST, true)); and not breaking because of FLV video. Also, they are getting their Flash vars. What really sucks is that if I try to use the development version of the Flash player, it fixes the bug!

I really like AS3, but I think Adobe needs to make Flash either less buggy or more forgiving. A lot of the errors that will kill an app could just as easily fail seemlessly, like setting a null objects visible property to false - does that REALLY have to break the whole app?