How can I remove a gem from my Rails 3 project without getting this really strange Bundle error?

Question

The error is: You have modified your Gemfile in development but did not check the resulting snapshot (Gemfile.lock) into version control

WHAT VERSION CONTROL? Why/how does Bundle know anything about version control? I just removed a line from my Gemfile. Am I not supposed to do that?

Answer 1

Did you run bundle update after you changed your Gemfile? Can you please post the output from that, and any output details related to the error message?

Answer 2

Do rm -rf .bundle && bundle install from your project root.