Edge Rails..

I am trying to update my InstantRails installation to
Edge rails but getting below error on 

E:workdeopt_localdepot>rake rails:freeze:edge
--trace
(in E:/work/deopt_local/depot)
rake aborted!
no such file to load --
E:/work/deopt_local/depot/config/../vendor/rails/railties/li
b/initializer
E:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_
require.rb:27:in
`gem_original_require'
E:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_
require.rb:27:in
`require'
E:/work/deopt_local/depot/config/boot.rb:16
E:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_
require.rb:27:in
`gem_original_require'
E:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_
require.rb:27:in
`require'
E:/work/deopt_local/depot/rakefile:4
E:/InstantRails/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/r
ake.rb:1828:in
`load'
E:/InstantRails/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/r
ake.rb:1828:in
`load_rakefile'
E:/InstantRails/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/r
ake.rb:1900:in
`run'
E:/InstantRails/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/bin/r
ake:7
E:/InstantRails/ruby/bin/rake.bat:25:in `load'
E:/InstantRails/ruby/bin/rake.bat:25


Help is appreciated. -Panks
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