'platformio' is not recognized as an internal or external command, operable program or batch file.

[donnib]

I get this on Windows ocasionally, i can build few times then suddenly i get this. I close/re-open atom and then it works again...annoying. Am i doing something wrong or is this a bug ?

[efatsi]

I'm guessing Atom is losing track of the PATH required to find and run the platformio command. Looks like this happens from time to time on Windows - http://helpdeskgeek.com/how-to/fix-not-recognized-as-an-internal-or-external-command/.

To fix this, you can explicitly set the PATH that the package will use. Without setting it, it defaults to using the PATH that Atom was opened in. It's surprising to me that this would work initially and then stop after a couple builds. But oh well!

If you're able to find the PATH used in a command line window (echo %PATH%), and paste that into the package settings, that should resolve your issue. Let me know how that goes.