I’ve gotten past the C:\Program is not a recognized command, but there is another error I’ve not solved yet. You can try this path, but there is an extra “Files” being added to the project folder path that shouldn’t be.
“cmd”: “/Program^ Files^ ^(x86^)/Corona^ Labs/Corona^ SDK/Corona^ Simulator.exe”,
All that said, Corona SDK actually works better when you don’t use an editor’s build command. I know many people are used to working that way, because that’s how IDE’s typically work. But each time you run the build command you have to launch the simulator. Corona’s Simulator is designed to watch for file changes and automatically reload itself. Simply run the simulator, load your project through it’s file system interface (likely to be the #1 entry on the welcome screen that starts up and in the Recent projects list). Then edit your files in Atom and as soon as you save the file in Atom, the simulator should automatically reload the project saving you from having to hit CTRL-ALT-B.
Rob