A free Demo Version is available to check if this application runs in your local system.
Try both versions (EXE and SWF) so to see if at least one of them runs correctly in your OS (Windows or MAC or Linux or whatever).
Make sure you have installed the latest release of Flash Player 10 or later if testing SWF version.
Demo Version contains the full version and every feature is activated. You can then test to see if you can Load, Save, Print and manipulate each Element.
The only difference with full version is the presence of Demo Text inside the canvas during visualization and printing.
Note that Demo Text prevents you from selecting or dropping Elements lying directly under it.