I get the following error when running build on Sublime Text 3 when trying to build:
[WinError 2] The system cannot find the file specified
[cmd: ['elm-make', 'foo.elm', '--output=build\foo.html', '--report=json', '--yes']]
[dir: ~\elm]
[path: ~\AppData\Roaming\npm]
[Finished]
I got this error both on my home PC and work PC, both are running Windows 10, so it doesn't seem to be unique to my setup. Spent a frustrating hour figuring out why it wasn't working -- I needed to tweak 'Elm Make.sublime-build' and edit 'elm-make' to 'elm-make.cmd'. It's odd because just 'elm-make' works perfectly fine in Powershell.
From deadfoxygrandpa#113: