From a reader:
Please provide an example which supplies a custom fallbackclass (with code for the fallbackclass) for an Application jar.

http://docs.oracle.com/javafx/2.0/deployment/javafx_ant_task_reference002.htm#CIAGCAFH

Please provide more description on what the fallbackclass is, how and when it gets invoked and what it is supposed to do.

Can a custom fallback class only be specified by the ant tasks, or can you also do specify one via the javafxpackager command line tool?

Please provide a bit more of an overview of what the embedded launcher which invokes your Application class is and does and when you would or would not want one (e.g. I don't think a 3rd party JavaFX control library would need an embedded launcher).