ERROR: 'rake/rdoctask' is obsolete and no longer supported

Question

Out of the blue, I started getting the following error message:

(in /Users/me/.rvm/gems/ruby-1.9.3-p125@mysql2/gems/rails-0.9.5)
rake aborted!
ERROR: \'rake/         


        

Answer 1

I struck with this same problem when try to install gems by the command rake gems:install my rails version is rails2.3.2 and i have rvm installed. my gem list is,

actionmailer (2.3.2)
actionpack (2.3.2)
activerecord (2.3.2)
activeresource (2.3.2)
activesupport (2.3.2)
bundler (1.3.5)
rails (2.3.2)
rake (10.0.4)
rubygems-bundler (1.1.1)
rvm (1.11.3.7)

so uninstalled the rake by the command

rvm use ruby-1.8.7-p371@global && gem uninstall rake -v 10.0.4

then i installed rake of older version

rvm use ruby-1.8.7-p371@global && gem install rake -v 0.8.7

now rake gems:install works fine

hope it may help some one!