Getting the above error message trying to deploy to Heroku (Windows, PuTTY keygen).
Turns out the public/private key files saved through putty aren’t of a valid OpenSSH format (expected by Heroku). You can still use Putty Keygen by copying the text generated under “Public key for pasting into OpenSSH authorized_key file” (save it to your *.pub)
I’m inching towards my first Mac. Windows is a frustration after the other.
UPDATE: working with Heroku/Git/SSH on a windows machine is a royal pain. One step closer to a MaxBook.
Follow these if you’re stuck:
My setup so far is “Putty Keygen, Putty, Pageant, Git GUI”