no-go SWF, rock-n-roll FLA

Greetings, I have a very peculiar issue with some files I have received. It is a dynamic page-flip viewer; it will launch 100% success in Flash CS3; yet when the subsequent SWF is launched outside of Flash CS3 in the Flash Player or a Browser it only displays blank pages (I.E. the engine is there, yet no XML is parsed successfully). I have tried this on various machines and fixed all file permissions to no avail, any comments appreciated