Hi, > Does this mean that an app that I compile with the default settings for > 4.5.1A will not benefit from this stacktrace availability, even if the user > has 11.5 installed?
From my testing that's sadly the case. You could detect the version of the flash player and then load a swf compiled with 11.5 if they are using 11.5. (Assuming your app is in the browser). Justin