Conflict between Comatose and Login Engine

Looks like that when comatose calls “require ‘controller’”, the
server-start command failed. It should be the conflict between Comatose
and Login Engine. Because if I delete Comatose, everything is OK.
Any idea? Pls help. thanks a lot;)

C:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/servers/webrick.rb:11:
warning: already initialized constant OPTIONS
=> Booting WEBrick…
./script/…/config/…/config/environment.rb:8: warning: already
initialized constant RAILS_GEM_VERSION
C:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/servers/webrick.rb:11:
warning: already initialized constant OPTIONS
./script/…/config/…/config/environment.rb:8: warning: already
initialized constant RAILS_GEM_VERSION
C:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.6/lib/commands/servers/webrick.rb:11:
warning: already initialized constant OPTIONS
./script/…/config/…/config/environment.rb:8: warning: already
initialized constant RAILS_GEM_VERSION
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
gem_original_require': no such file to load -- login_engine (MissingSourceFile) from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:inrequire’
from
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
require' from ./script/../config/../vendor/plugins/comatose/lib/comatose.rb:1 from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:ingem_original_require’
from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
require' from C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:inrequire’
from ./script/…/config/…/vendor/plugins/comatose/init.rb:20:in
load_plugin' from C:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.6/lib/initializer.rb:348:inload_plugin’
… 19 levels…
from
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
require' from ./script/server:3 from -e:4:inload’
from -e:4