Sentry-ruby: Platform is not a module (TypeError) on gem_init.rb Line 22

[desbest]

c:\mowes\www\compesh>ramaze start  
C:/mowes/ruby/lib/ruby/gems/1.9.1/gems/raven-1.2.4/lib/raven/gem_init.rb:22:in `  <module:Gem>': Platform is not a module (TypeError)          
from C:/mowes/ruby/lib/ruby/gems/1.9.1/gems/raven-1.2.4/lib/raven/gem_init.rb:20:in `<top (required)>'          
from C:/mowes/ruby/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'          
from C:/mowes/ruby/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'          
from C:/mowes/ruby/lib/ruby/gems/1.9.1/gems/raven-1.2.4/lib/raven.rb:19:in `<top (required)>'          
from C:/mowes/ruby/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in `require'          
from C:/mowes/ruby/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in `rescue in require'          
from C:/mowes/ruby/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require'          
from c:/mowes/www/compesh/app.rb:14:in `<top (required)>'

[coderanger]

You did gem install raven not sentry-raven.