/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': superclass mismatch for class DateTime (TypeError)

[yubingxing]

root@70733:/var/www# redmon
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require': superclass mismatch for class DateTime (TypeError) from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/lib/ruby/1.9.1/date.rb:3:in <top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/lib/ruby/1.9.1/time.rb:43:in<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/xml_mini.rb:1:in <top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/core_ext/array/conversions.rb:1:in<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/duration.rb:2:in <top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/core_ext/time/calculations.rb:1:in<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/core_ext/time.rb:2:in <top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/core_ext.rb:3:inblock in <top (required)>'
from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/core_ext.rb:1:in each' from /var/lib/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/core_ext.rb:1:in<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /var/lib/gems/1.9.1/gems/redmon-0.0.8/lib/redmon.rb:2:in <top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /var/lib/gems/1.9.1/gems/redmon-0.0.8/bin/redmon:5:in<top (required)>'
from /usr/local/bin/redmon:23:in load' from /usr/local/bin/redmon:23:in

'

[arturtr]

Same error

[Jan0707]

same here