If you keep getting popups errors in the github Atom text editor when using Rubocop then maybe its this issue I just had. While working on a gem complaining about a missing rubocop version or in general giving odd and annoying errors you should try and remove your Gemfile.lock file in the root of your gem folder and run bundle install again. It could be that the Gemfile.lock is pointing at a rubocop you no longer have installed. I was frustrated for several minutes about these errors when I brought up an older gem to test out Rubocop integration with Atom until I realized that I probably had done a bundle install way back when I wrote this gem and created the Gemfile.lock file which the Rubocop was trying to respect.