This release only contains a single fix for a new issue that occurs when using Flash Player 9.
If you have multiple swf files embedded in a single HTML page, and at least one of those files uses ExternalInterface to add a callback, when you leave the page you will get an error that says “Line 56: Out of Memory”.
This only occurs in IE – no other browsers are affected, and it only happens when using Flash Player 9 whether you are using SWFObject or not.
So to get to the point, this new version of SWFObject just removes the ‘bad’ code that Flash Player 9 inserts into the page and instead uses the cleanup code from the previous version of SWFObject that has been working fine for Flash Player 8.
Go grab a copy now – anyone using ExternalInterface needs to be aware of this issue and should upgrade their SWFObject script immediately if you have any pages with more than one swf embedded in it.