I am on windows 7, ruby 2.2.2p95, rails 4.2.3.
C:\sites\gmail>rails generate cucumber
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sqlite3-1.3.10-x64-mingw32/lib/sqlite3.rb
:6:in `require’: cannot load such file – sqlite3/sqlite3_native (LoadError)
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sqlite3-1.3.10-x64-mingw32/l
ib/sqlite3.rb:6:in `rescue in <top (required)>’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sqlite3-1.3.10-x64-mingw32/l
ib/sqlite3.rb:2:in `<top (required)>’
from C:/sites/gmail/config/application.rb:5:in `require’
from C:/sites/gmail/config/application.rb:5:in `<top (required)>’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.3/lib/rails/com
mands/commands_tasks.rb:141:in `require’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.3/lib/rails/com
mands/commands_tasks.rb:141:in `require_application_and_environment!’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.3/lib/rails/com
mands/commands_tasks.rb:128:in `generate_or_destroy’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.3/lib/rails/com
mands/commands_tasks.rb:50:in `generate’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.3/lib/rails/com
mands/commands_tasks.rb:39:in `run_command!’
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.3/lib/rails/com
mands.rb:17:in `<top (required)>’
from bin/rails:4:in `require’
from bin/rails:4:in `’
