Cannot activate rake (= 0.9.2.2, runtime) for [], already activated rake-10.0.2 for []

Question

I am trying to run a simple rake task. When I do this, I get the following error:

cannot activate rake (= 0.9.2.2, runtime) for [], rake-10.0.2 for [] is already activated

I ran the gem list command and it lists the rake as having 10.0.3, 0.9.2.2 and 0.8.7.

So, I type gem uninstall rake -v 10.0.3. At the prompt, the deletion was successful, but version 10.0.3 still exists when I make a list of gems, and I still get the same problem when I try to run any rake command.

Any suggestions?

Thanks in advance Tim

Answer 1

You can:

• run bundle exec rake to use the rake version specified on your Gemfile.lock if you don't want to update it.
• Update the rake version used in Gemfile.lock by running bundle update rake and you can use the rake command again!

Answer 2

You probably have an earlier version of the rake specified in your Gemfile.lock . Try running bundle update rake , which should update everything related to rake and modify your Gemfile.lock.