Rails generator incompatible library

Give this a try.

Run the command: gem pristine --all

And make sure to restart spring with spring stop && spring start

in Gemfile try move the line gem 'devise' to below

Do a clean install on your ruby and gems

rvm remove 2.2.3
rvm install 2.2.3
rvm use 2.2.3
gem install bundler
bundle install

The problem was unrelated to devise. I found a similar question here which said to uninstall the gem which has the incompatible library issue, and then re-run bundle install. So I did, and it worked!