Custom_require.rb:36:in `require': 193: %1 is not a valid Win32 application

Rails
1

I just installed rails using Rails installer.

and when I ran the following code:

rails new blog

I got the following errors:

F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubygems/custom_re
quire.rb:36:in require': 193: %1 is not a valid Win32 application. - F:/dev/r uby/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/i386-mingw32/digest/md5.so (LoadErro r) from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg ems/custom_require.rb:36:inrequire’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railt
ies-3.2.1/lib/rails/generators/app_base.rb:1:in <top (required)>' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg ems/custom_require.rb:36:inrequire’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg
ems/custom_require.rb:36:in require' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railt ies-3.2.1/lib/rails/generators/rails/app/app_generator.rb:1:in<top
(required)>
’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg
ems/custom_require.rb:36:in require' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg ems/custom_require.rb:36:inrequire’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railt
ies-3.2.1/lib/rails/commands/application.rb:24:in <top (required)>' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg ems/custom_require.rb:36:inrequire’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg
ems/custom_require.rb:36:in require' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railt ies-3.2.1/lib/rails/cli.rb:15:in<top (required)>’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg
ems/custom_require.rb:36:in require' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/site_ruby/1.9.1/rubyg ems/custom_require.rb:36:inrequire’
from
F:/dev/ruby/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railt
ies-3.2.1/bin/rails:7:in <top (required)>' from F:/dev/ruby/RailsInstaller/Ruby1.9.3/bin/rails:19:inload’
from F:/dev/ruby/RailsInstaller/Ruby1.9.3/bin/rails:19:in
`’

Any thoughts on how to solve this ?