Rails doesn't find installed gem on server startup

Hi,

I have a ruby application that I need to install but I’m new to ruby
on rails and I’ve run into a problem already…

I’ve installed Ruby 1.8.7, RubyGems 1.5.3 and Rails 2.3.8. These are
the versions required for the application.

I have also installed all the gems specified in the application’s .gem
file using “$ gem install …”
Required gems : haml jrails rails -v 2.3.8 pg heroku_deploy money
validates_email_format_of mogli facebooker2 simple_uuid delayed_job
ssl_requirement recaptcha hoptoad_notifier

When I launch the server executing “$ ruby script/server” from the
application’s directory I get the following message :

$ ruby script/server
=> Booting WEBrick
=> Rails 2.3.8 application starting on http://0.0.0.0:3000
Missing these required gems:
delayed_job < 2

You’re running:
ruby 1.8.7.334 at C:/Ruby187/bin/ruby.exe
rubygems 1.5.3 at C:/Users/me/.gem/ruby/1.8, C:/Ruby187/lib/ruby/
gems/1.8

Run rake gems:install to install the missing gems.

It can’t find delayed_job, even though delayed_job-2.1.4 is installed
on the Gem path C:/Ruby187/lib/ruby/gems/1.8

Running “$ rake gems:install” doesn’t help either :

$ rake gems:install
(in [application directory])
Run rake gems:install to install delayed_job

So I found the solution…

Missing these required gems:
delayed_job < 2

means that the application requires the delayed_job gem with a version
less
than 2 : as specified in the environment.rb :

config.gem ‘delayed_job’, :version => “<2”

I just had to install a previous version of the delayed_job gem :

$ gem install delayed_job -v 1.8.5

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