Chef Web ui Start Failure via rackup and thin

>> Writing PID to /var/run/chef/thin-webui.30000.pid
Loading init file from /var/lib/gems/1.8/gems/chef-server-webui-0.8.10/config/init.rb
 ~ Loaded slice 'ChefServerWebui' ...
/var/lib/gems/1.8/gems/ruby-openid-2.1.7/lib/openid.rb:16: warning: already initialized constant VERSION
/usr/lib/ruby/1.8/cgi.rb:279: warning: already initialized constant CR
/usr/lib/ruby/1.8/cgi.rb:282: warning: already initialized constant LF
/usr/lib/ruby/1.8/cgi.rb:285: warning: already initialized constant EOL
/usr/lib/ruby/1.8/cgi.rb:287: warning: already initialized constant REVISION
/usr/lib/ruby/1.8/cgi.rb:292: warning: already initialized constant PATH_SEPARATOR
/usr/lib/ruby/1.8/cgi.rb:313: warning: already initialized constant HTTP_STATUS
/usr/lib/ruby/1.8/cgi.rb:317: warning: already initialized constant RFC822_DAYS
/usr/lib/ruby/1.8/cgi.rb:320: warning: already initialized constant RFC822_MONTHS
>> Exiting!
/usr/lib/ruby/1.8/cgi.rb:774: superclass mismatch for class Cookie (TypeError)
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/ruby-openid-2.1.7/lib/openid/util.rb:1
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/ruby-openid-2.1.7/lib/openid/message.rb:1
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/ruby-openid-2.1.7/lib/openid/consumer/idres.rb:1
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/ruby-openid-2.1.7/lib/openid/consumer.rb:1
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/ruby-openid-2.1.7/lib/openid.rb:19
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/chef-server-webui-0.8.10/app/controllers/openid_consumer.rb:22
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:866:in `load_file'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:900:in `load_classes'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:898:in `each'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:898:in `load_classes'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:897:in `each'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:897:in `load_classes'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:644:in `run'
	from /var/lib/gems/1.8/gems/extlib-0.9.14/lib/extlib/dictionary.rb:268:in `each'
	from /var/lib/gems/1.8/gems/extlib-0.9.14/lib/extlib/dictionary.rb:268:in `each'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:642:in `run'
	from /var/lib/gems/1.8/gems/merb-core-1.0.15/lib/merb-core/bootloader.rb:99:in `run'
	from /var/lib/gems/1.8/gems/chef-server-webui-0.8.10/config.ru:83
	from /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval'
	from /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize'
	from /var/lib/gems/1.8/gems/chef-server-webui-0.8.10/config.ru:1:in `new'
	from /var/lib/gems/1.8/gems/chef-server-webui-0.8.10/config.ru:1