Error launching Rails server: undefined method 'configure'

Question

I\'m new to rails and working through Hartl\'s tutorial. Everything was fine until I tried to do the tutorial a second time and created another project trying to use the lat

Answer 1

First set Ruby version before Rails new

I had the same problem and I tried the answer given and it had no impact. I even tried changing the name to get rid of the underscore, and it had no impact.

The problem is that you did this:

$ rails new app_name

But your ruby version was probably 2.1.1 or something else. You want to do:

$ rvm 2.0.0

BEFORE you run the new app, and then when you set 2.0.0 in your Gemfile (as Hartl recommends) it falls into place.

I don't know WHY this works, and I hope someone will shed light on it, but I can tell you that this worked better than the answer that is currently in the lead.