Can get e.g. “Your Ruby version is 2.1.1, but your Gemfile specified 2.1.2” when changing Ruby version without restarting Spring

[henrik]

I started a Rails 4 app with Ruby 2.1.1 but then I upgraded to 2.1.2 (in Gemfile and .ruby-version), and started getting this error e.g. opening a console or generating a migration.

It was fixed by running spring stop.

My theory is that Spring kept on running on 2.1.1 and so caused this error.

It was a bit painful. Is there any way a situation like this one could be detected and self-healed or give a better error message?

[brancusi]

Nice! Fixed for me

[henrik]

@brancusi Awesome, thanks for telling me!

[dideler]

Got Your Ruby version is 2.1.2, but your Gemfile specified 2.1.3 when running rails c.

Running spring stop fixed the issue for me, thanks @henrik!

[vesan]

I also had this problem. Thanks @henrik for the solution!

[modosc]

why doesn't this get caught if .ruby-version and/or Gemfile are watched by spring? i tried adding these but i still saw the same issue.

[mahemoff]

+1 for warning about this. Thankfully Google now ranks this page highly for the error message at least.

[worldask]

thanks @henrik !

[george-carlin]

Thanks!

[henrik]

StackOverflow answer with 20 35 38 40 upvotes at the time of writing (suggesting a lot of people have run into it): http://stackoverflow.com/a/24206317/6962