Error when trying to start server after upgrading to Rails 3

Question

I\'ve just upgraded to Rails 3, using the instructions from this railscast. When I try to start the server, this is what happens:

$ rails s
script/rails:6:in         


        

Answer 1

Maybe you can just reinstall your rubygem, or update it.

Rubygem versions should fit to your Ruby versions. For every Ruby version you installed separated Gems needed.

May I ask did you use any 'sudo' with RVM installations? Better to avoid, see here: http://rvm.beginrescueend.com/rubies/rubygems/

Can you list here please your "gem list" after switched to default Ruby version you want to use? Also "rvm list" "ruby -v" "gem -v" and your OS please.

Also wise to write to forum at the section you downloaded Railscasts' video, because maybe others will have the same problem.

Answer 2

Have you actually installed the rails 3.0.x gem? Maybe you missed this step :).

It looks like your script/rails script cannot find the included file from rails gem. You need to install all needed gems separately for each version of Ruby you're using (e.g. 1.8.7 and 1.9.2).