When you run from a command prompt, be sure you run
Spine.comby typing either
spine.com(case doesn't matter). If you type
spine.exethen it will run but it will not print anything.
When you run by typing
spine.com, is anything printed? Does it hang or does it bring you back to the command prompt where you can type another command?
Are you running antivirus software? If nothing at all is printed when running
spine.comfrom the command line then it sounds like an antivirus is wrecking Spine's files.