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POHow to fix the uninitialized constant Rake::DSL problem on Heroku?
 

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  1. POHow to fix the uninitialized constant Rake::DSL problem on Heroku?
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    <p>I am getting errors similar to the ones <a href="https://stackoverflow.com/questions/6091964/delayed-job-queue-not-being-processed-on-heroku">in</a> <a href="https://stackoverflow.com/questions/6085610/rails-rake-problems-uninitialized-constant-rakedsl">these</a> <a href="https://stackoverflow.com/questions/5287121/undefined-method-task-using-rake-0-9-0/5290331#5290331">questions</a>, except mine are occuring on <a href="http://www.heroku.com" rel="nofollow noreferrer">Heroku</a>:</p> <pre><code>2011-05-30T09:03:29+00:00 heroku[worker.1]: Starting process with command: `rake jobs:work` 2011-05-30T09:03:30+00:00 app[worker.1]: (in /app) 2011-05-30T09:03:30+00:00 heroku[worker.1]: State changed from starting to up 2011-05-30T09:03:33+00:00 app[worker.1]: rake aborted! 2011-05-30T09:03:33+00:00 app[worker.1]: uninitialized constant Rake::DSL 2011-05-30T09:03:33+00:00 app[worker.1]: /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:8:in `&lt;class:TaskLib&gt;' </code></pre> <p>The answer in those questions seems to be to specify <code>gem 'rake', '0.8.7'</code> because the 0.9 version causes the problem.</p> <p>When I try to add <code>gem 'rake', '0.8.7'</code> to my gemfile and push to Heroku I get this error:</p> <pre><code>Unresolved dependencies detected; Installing... You have modified your Gemfile in development but did not check the resulting snapshot (Gemfile.lock) into version control You have added to the Gemfile: * rake (= 0.8.7) FAILED: http://devcenter.heroku.com/articles/bundler ! Heroku push rejected, failed to install gems via Bundler error: hooks/pre-receive exited with error code 1 To git@heroku.com:my_app.git ! [remote rejected] master -&gt; master (pre-receive hook declined) error: failed to push some refs to 'git@heroku.com:my_app.git' </code></pre> <p>My gemfile normally works fine on Heroku. What should I do?</p>
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    1. CODid you try the [#3 answer](http://stackoverflow.com/questions/5287121/undefined-method-task-using-rake-0-9-0/5290331#5290331) you posted? What happened after making those changes?
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