# Error running Selenium rakefile with Rails 2.3.4

**URL:** <https://www.ruby-forum.com/t/error-running-selenium-rakefile-with-rails-2-3-4/176692>\
**Category:** Rails\
**Created:** [October 4, 2009, 11:58pm UTC](https://www.ruby-forum.com/t/error-running-selenium-rakefile-with-rails-2-3-4/176692 "2009-10-04T23:58:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Perceptes](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/e68b1a/32.png) [@Perceptes](https://www.ruby-forum.com/u/Perceptes)\
**Post date:** [October 4, 2009, 11:58pm UTC](https://www.ruby-forum.com/t/error-running-selenium-rakefile-with-rails-2-3-4/176692/1 "2009-10-04T23:58:20Z")

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Hi all,

I want to get started with Selenium for testing Ajax. I followed the  
installation instructions on [Selenium](http://seleniumhq.org/projects/on-rails/)  
but get an error when running the rakefile in step 4. I get this  
error: “uninitialized constant ActionView::Base::Helpers (NameError)”  
The full output is here: [http://pastie.org/641664](http://pastie.org/641664)

The only mention of this error I could find on the web is here:  
[http://en.blog.improveit.com.br/articles/2009/03/27/new-selenium-on-rails-is-out](http://en.blog.improveit.com.br/articles/2009/03/27/new-selenium-on-rails-is-out)  
but the fix presented in the comments there had no effect for me.

I had the impression that Selenium was a very popular and commonly  
used tool in the Rails community so I was surprised it didn’t just  
work out of the box and that I haven’t found any other mention of the  
error. Has anyone seen this before? Any idea what to try? Thanks in  
advance.