[Answered ]-How do I embed a .swf file into my Google App Engine app?

This doesn’t look like a standard way to embed a flash app – and it’s not an App Engine issue. You’ve got an object tag with nothing but dimensions, and an embed tag inside it with nothing but a URL. Have you tried using some standard embed markup to do this? The Flash environment should provide a simple way to export your app embedded in an HTML page. Have you tried doing it with a simple static HTML file on disk, to make it easier to debug and take App Engine out of the equation?