Bahamut Fabulous Highly unlikely to be the problem, but are you running a 32-bit OS? That message looks like your version of Windows is literally
unable to run the game rather than "simply" finding it suspicious and preventing it from running. If not, try the "starter pack" of troubleshooting:
1. Try running the game as admin;
2. Try running it from a short-name path (e.g. "D:/Games/FallenAngel" instead of "C:/something/people/do/just/because/it/can/break/things/Marielle") that does not reside in system folders (e.g. Program Files or Desktop);
3. Go to executable's Properties and change Compatibility to an earlier version of Windows, like Win7 or Win8.