Rails - Apr 2009 - can run up the server after update to 2.3.2

my rails version was 2.2.2 and I turn 2.3.2 last night with gem update
and rake rails:freeze:edge. unfortunately I got a problem when I restart
my server.

a error when I script/server

./script/../config/../vendor/rails/railties/lib/rails/plugin.rb:1:in
`require'': no such file to load --
active_support/core_ext/kernel/reporting (LoadError)
  from ./script/../config/../vendor/rails/railties/lib/rails/plugin.rb:1
  from
./script/../config/../vendor/rails/railties/lib/rails/plugin/loader.rb:1:in
`require''
  from
./script/../config/../vendor/rails/railties/lib/rails/plugin/loader.rb:1
  from
./script/../config/../vendor/rails/railties/lib/initializer.rb:9:in
`require''
  from ./script/../config/../vendor/rails/railties/lib/initializer.rb:9
  from ./script/../config/boot.rb:45:in `require''
  from ./script/../config/boot.rb:45:in `load_initializer''
  from ./script/../config/boot.rb:38:in `run''
  from ./script/../config/boot.rb:11:in `boot!''
  from ./script/../config/boot.rb:110
  from script/server:2:in `require''
  from script/server:2

and I tried to run rake rails:update, also a problem.

rake aborted!
undefined method `mattr_accessor'' for
ActiveSupport::Dependencies:Module
/home/ning/blank/Rakefile:4



Do you have any idea waht''s going wrong?
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