When atom on my Windows 10 laptop, I have used apm trough the windows command line to install packages.
After making no changes that I can recall to atom, now any use of apm in the command prompt is met with
The system cannot find the path specified
I installed 2 other packages with apm, although only now has this occurred. I can install packages through settings within atom, but personally my preference is using apm. All apm commands now, apm --version, apm install , etc. give that same message.