so I have set up my database and trying to generate some scaffolding for the app I made. I get this error, and I am a bit confused. Any advice? Thanks!
rails generate scaffold product title:string description:text image_url:string
/Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>): could not find expected ':' while scanning a simple key at line 18 column 3 (Psych::SyntaxError)
from /Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:203:in `parse_stream'
from /Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:151:in `parse'
from /Users/Cameron/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/psych.rb:127:in `load'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application/configuration.rb:115:in `database_configuration'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activerecord-3.2.13/lib/active_record/railtie.rb:78:in `block (2 levels) in <class:Railtie>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:42:in `each'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activerecord-3.2.13/lib/active_record/base.rb:720:in `<top (required)>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/activerecord-3.2.13/lib/active_record/railtie.rb:88:in `block in <class:Railtie>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/Cameron/depot/config/environment.rb:5:in `<top (required)>'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application.rb:103:in `require'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/application.rb:103:in `require_environment!'
from /Users/Cameron/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:25:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
This is likely a problem in your config/database.yml file. The error is from Psych, which is Ruby's YAML parsing engine. I don't know of any other YAML files that are read during a rails g scaffold, and I can reproduce that failure by introducing a typo into my database.yml file.
There are some online YAML validators you can paste your file into for help debugging it. Or add it to your question above if you can't find the problem.
Related
I'm just starting out with Rails and am following the Ruby on Rails essential training course and get problems trying to start WEBrick. Assuming it has something to do with my installation of mysql but not sure.
I made sure that I am in the correct directory (:C\sites\simple_cms)
I ran 'bundle install' before running 'rails s'
I followed these guides to get the gem installed (second to last entry): https://github.com/brianmario/mysql2/issues/372
I have ruby 2.2.1p85, rails 4.2.1 and this rubygem: mysql2-0.3.18-x64-mingw32 installed
Would appreciate some help from y'all :)
Stack trace:
C:\Sites\simple_cms>rails s
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/mysql2-0.3.18-x64-mingw32/lib/mysql2/mysql2.rb:2:in `require': cannot load such file -- mysql2/2.2/mysql2 (LoadError)
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/mysql2-0.3.18-x64-mingw32/lib/mysql2/mysql2.rb:2:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/mysql2-0.3.18-x64-mingw32/lib/mysql2.rb:31:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/mysql2-0.3.18-x64-mingw32/lib/mysql2.rb:31:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler/runtime.rb:76:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler/runtime.rb:72:in `each'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler/runtime.rb:72:in `block in require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler/runtime.rb:61:in `each'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler/runtime.rb:61:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:134:in `require'
from C:/Sites/simple_cms/config/application.rb:7:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:78:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:78:in `block in server'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in `tap'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in `server'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
I have been working on Ruby on Rails since 2 months go and now I want to change the database system so I installed the gem mysql2 by this command:
gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\mysql-connector\lib" --with-mysql-include="C:\mysql-connector\include" --with-mysql-dir="C:\mysql-connector"'
And It works!
but the problem is when I want to run rails server again I got this error
c:\zreactor\demo>rails server
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `requir
e': 126: The specified module could not be found. - C:/Ruby200-x64/lib/ruby/ge
ms/2.0.0/extensions/x64-mingw32/2.0.0/mysql2-0.3.16/mysql2/mysql2.so (LoadError)
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2.rb
:8:in `<top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:76:in `require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:76:in `block (2 levels) in require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:72:in `each'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:72:in `block in require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:61:in `each'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:61:in `require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler.r
b:133:in `require'
from c:/zreactor/demo/config/application.rb:7:in `<top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:74:in `require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:74:in `block in <top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:71:in `tap'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:71:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
I searched in the source and it looks everything ok,I have no idea why I got this error.
I'm working on W8 with ruby 2.0 and rails 4.0.2.
I would appreciate your help guys,
Thanks!
Most likely you need to regenerate libmysql.lib as described here:
...mysql2/mysql2.so: [BUG] Segmentation fault ruby 2.0.0p247
I'm trying to install and setup Jekyll as use it for github pages but is getting very complicated, I have to add that I just started programming few months ago so maybe I cannot see the mistake as easy.
Followed the instructions on website:
~ $ gem install jekyll
~ $ jekyll new myblog
~ $ cd myblog
~/myblog $ jekyll serve
# => Now browse to localhost:4000
The part of jekyll serve fails:
Generating... Liquid Exception: cannot load such file -- yajl/2.0/yajl i
n _posts/2014-03-21-welcome-to-jekyll.markdown
C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require': c
annot load such file -- yajl/2.0/yajl (LoadError)
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/yajl-ruby-1.1.0-x86-mingw32/lib
/yajl/yajl.rb:2:in `<top (required)>'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/yajl-ruby-1.1.0-x86-mingw32/lib
/yajl.rb:1:in `<top (required)>'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:i
n `require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:135:i
n `rescue in require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:144:i
n `require'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/pygments.rb-0.5.4/lib/pygments/
popen.rb:3:in `<top (required)>'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/pygments.rb-0.5.4/lib/pygments.
rb:1:in `<top (required)>'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in
`require'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/tags/hi
ghlight.rb:52:in `render_pygments'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/tags/hi
ghlight.rb:45:in `render'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/liquid-2.5.5/lib/liquid/block.r
b:106:in `block in render_all'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/liquid-2.5.5/lib/liquid/block.r
b:93:in `each'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/liquid-2.5.5/lib/liquid/block.r
b:93:in `render_all'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/liquid-2.5.5/lib/liquid/block.r
b:82:in `render'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/liquid-2.5.5/lib/liquid/templat
e.rb:124:in `render'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/liquid-2.5.5/lib/liquid/templat
e.rb:132:in `render!'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/convert
ible.rb:88:in `render_liquid'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/convert
ible.rb:150:in `do_layout'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/post.rb
:259:in `render'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/site.rb
:239:in `block in render'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/site.rb
:238:in `each'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/site.rb
:238:in `render'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/site.rb
:39:in `process'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/command
.rb:18:in `process_site'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/command
s/build.rb:23:in `build'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/lib/jekyll/command
s/build.rb:7:in `process'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/jekyll-1.4.3/bin/jekyll:97:in `
block (2 levels) in <top (required)>'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/c
ommand.rb:180:in `call'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/c
ommand.rb:180:in `call'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/c
ommand.rb:155:in `run'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/r
unner.rb:422:in `run_active_command'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/r
unner.rb:66:in `run!'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/d
elegates.rb:8:in `run!'
from C:/Ruby200/lib/ruby/gems/2.0.0/gems/commander-4.1.6/lib/commander/i
mport.rb:10:in `block in <top (required)>'
Googling I found out that is necesary to install yajl-ruby gem, I do it, try again, same error so I try installing also gem pygments and win32-api but it keeps the same.
Also I tried to uninstall the current version 1.4.3 and installed the previous one 1.4.2 but the same problem appears.
Any thoughts?
If you are specifically aiming to use Jekyll with GitHub pages you can use their gh-pages Gem, which includes all the dependencies.
Try this install guide.
Today i installed ruby and rails gems everthing got success
but after when i tried to start server using command rails server i get some error it is being listed below please help me
C:\Ruby200-x64\project>rails server
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.13/lib/mysql2.rb:8:in `requir
e': 193: %1 is not a valid Win32 application. - C:/Ruby200-x64/lib/ruby/gems/2
.0.0/gems/mysql2-0.3.13/lib/mysql2/mysql2.so (LoadError)
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.13/lib/mysql2.rb
:8:in `<top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/r
untime.rb:72:in `require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/r
untime.rb:72:in `block (2 levels) in require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/r
untime.rb:70:in `each'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/r
untime.rb:70:in `block in require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/r
untime.rb:59:in `each'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/r
untime.rb:59:in `require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler.r
b:132:in `require'
from C:/Ruby200-x64/project/config/application.rb:7:in `<top (required)>
'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/co
mmands.rb:76:in `require'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/co
mmands.rb:76:in `block in <top (required)>'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/co
mmands.rb:73:in `tap'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/co
mmands.rb:73:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
Try to execute
rake db:create
command to create database and paste the errors if any. There we can find meaningful error message
I copy LIMMYSQL.dll from MySql and put it in Ruby bin folder and then start rails server and I am getting below error. Please help me
c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require': 193: %1 is not a valid Win32
application. - c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11-x86-mingw32/lib/mysql2/1.9/mysql2.so (LoadError)
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `block in require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:236:in `load_dependency'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11-x86-mingw32/lib/mysql2/mysql2.rb:2:in `<top (required)>'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `block in require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:236:in `load_dependency'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11-x86-mingw32/lib/mysql2.rb:9:in `<top (required)>'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:68:in `require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:66:in `each'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:66:in `block in require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:55:in `each'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler/runtime.rb:55:in `require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22/lib/bundler.rb:122:in `require'
from d:/merlin_demo_app/demo_app/config/application.rb:7:in `<top (required)>'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `require'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `block in <top (required)>'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `tap'
from c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
I have solved this, eventually!
I re-installed Ruby and Rails under RVM. I'm using Ruby version 1.9.2-p136.
After re-installing under rvm, this error was still present.
In the end the magic command that solved it was: