$ action_profiler --profiler=Prof PhotosController#show ":id => 1"
/usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1.5618/lib/active_support/dependencies.rb:263:in `load_missing_constant': uninitialized constant ProfProcessor (NameError)
        from /usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1.5618/lib/active_support/dependencies.rb:446:in `const_missing'
        from /usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1.5618/lib/active_support/dependencies.rb:458:in `const_missing'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/lib/action_profiler/path2class.rb:8:in `path2class'
        from /usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1.5618/lib/active_support/inflector.rb:162:in `inject'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/lib/action_profiler/path2class.rb:8:in `path2class'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/lib/action_profiler/profiled_processor.rb:148:in `load_processor'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/lib/action_profiler/profiled_processor.rb:63:in `process_args'
        from /usr/lib/ruby/1.8/optparse.rb:1284:in `order!'
        from /usr/lib/ruby/1.8/optparse.rb:1271:in `order!'
        from /usr/lib/ruby/1.8/optparse.rb:1351:in `permute!'
        from /usr/lib/ruby/1.8/optparse.rb:1378:in `parse!'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/lib/action_profiler/profiled_processor.rb:82:in `process_args'
        from /usr/lib/ruby/1.8/optparse.rb:815:in `initialize'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/lib/action_profiler/profiled_processor.rb:29:in `process_args'
        from /usr/lib/ruby/gems/1.8/gems/action_profiler-1.0.0/bin/action_profiler:5
        from /usr/bin/X11/action_profiler:18

$ action_profiler --profiler=ZenProfiler PhotosController#show ":id => 1"
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:33: [BUG] Segmentation fault
ruby 1.8.4 (2005-12-24) [i486-linux]

zsh: abort      action_profiler --profiler=ZenProfiler PhotosController#show ":id => 1"