mms-MacBook-Pro:REDMINE mrt_mhmt$ ruby script/server -e production
=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
=> Rails application starting on http://0.0.0.0:3000
Rails Error: Unable to access log file. Please ensure that /Developer/Tools/redmine/src/redmine-0.7.3/log/production.log exists and is chmod 0666. The log level has been raised to WARN and the output directed to STDERR until the problem is fixed.
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:489:in `load': no such file to load -- mongrel_rails (MissingSourceFile)
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:489:in `load'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:489:in `load'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/railties/lib/commands/servers/mongrel.rb:64
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:36:in `require'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:496:in `require'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/activesupport/lib/active_support/dependencies.rb:496:in `require'
	from /Developer/Tools/redmine/src/redmine-0.7.3/vendor/rails/railties/lib/commands/server.rb:39
	from script/server:3:in `require'
	from script/server:3