/Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in require': cannot load such file -- rubygems/format (LoadError)
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in
require'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler/source.rb:5:in <top (required)>'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler/dsl.rb:14:in
initialize'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler/dsl.rb:6:in new'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler/dsl.rb:6:in
evaluate'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler/definition.rb:17:in build'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler.rb:138:in
definition'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler.rb:126:in load'
from /Users/jay/.rvm/gems/ruby-2.1.2/gems/bundler-1.0.22/lib/bundler.rb:110:in
setup'
from /Users/jay/project_mon/config/boot.rb:8:in <top (required)>'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in
require'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:54:in require'
from script/rails:5:in
'
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Jay Patel
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Have you tried making a brand new rails app, "rails new my_app" and tried "rails s"? If there is still a problem, it looks like it is with RVM, I'd recommend reinstalling. – Vasseurth Aug 02 '14 at 04:28
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1Hi Vasseurth, thanks for advise, I've done exactly what you said. Delete all previous installation and it is working fine. – Jay Patel Aug 02 '14 at 08:05