can't activate rake (= 0.9.2.2, runtime) for [], already activated rake-10.0.2 for []

Question

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

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

So, I type gem uninstall rake -v 10.0.3. According to the prompt, the uninstall was successful - but version 10.0.3 is still there when I do a gem list - and I still get the exact same problem when I try to run any rake task.

Any suggestions?

Thanks in advance, Tim

How about `bundle exec` in front of it? – Michael Durrant Dec 25 '12 at 03:51 — Michael Durrant, Dec 25 '12 at 03:51

Andrea Singh · Answer 1 · 2012-12-25T04:39:21.210

14

You probably have the older version of rake listed in your Gemfile.lock. Try to run bundle update rake, which should update everything rake-related and change your Gemfile.lock as well.

edited Dec 25 '12 at 04:39

answered Dec 25 '12 at 03:57

Andrea Singh

1,593
13
23

I tried this and it says `Could not locate Gemfile.` – isomorphismes Jan 28 '14 at 17:59

score 9 · Accepted Answer · answered Jan 03 '13 at 10:40

You can either :

run bundle exec rake to use the version of rake listed on your Gemfile.lock if you don't want to update it
Update the version of rake used in your Gemfile.lock by running bundle update rake and then you will be able to use the command rake again !

can't activate rake (= 0.9.2.2, runtime) for [], already activated rake-10.0.2 for []

2 Answers2