In Ruby 1.8.x rails 2.x, "uninitialized constant activesupport: dependencies: mutex (nameerror )&

An exception.

Find the rails file in the bin directory under the ruby installation directory, for example, C: \ ruby187 \ bin.
Modify rails by addingRequire 'thread'

#! C:/ruby187/bin/ruby.exe # This file was generated by rubygems. # The application 'rails 'is installed as part of a gem, and # This file is here to facilitate running it. # require 'thread' require 'rubygems 'version = "> = 0" If argv. first = ~ /^ _ (. *) _ $/And GEM: version. Correct? $1 then version = $1 argv. shiftendgem 'rails ', versionload gem. bin_path ('rails', 'rails ', Version)

Next, run the rails someapp to generate the rails application, and then start RAKE: Ruby script/Sever to generate the preceding error.
Find the environment. Rb and boot. RB files in the ruby installation directory, and addRequire 'thread'