# Using RadRails

**URL:** <https://www.ruby-forum.com/t/using-radrails/186374>\
**Category:** Rails\
**Created:** [April 6, 2010, 12:12am UTC](https://www.ruby-forum.com/t/using-radrails/186374 "2010-04-06T00:12:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tig](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/73ab20/32.png) [@Tig](https://www.ruby-forum.com/u/Tig)\
**Post date:** [April 6, 2010, 12:12am UTC](https://www.ruby-forum.com/t/using-radrails/186374/1 "2010-04-06T00:12:53Z")

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Hi,

I’m new to RoR and have downloaded RadRails to use (on windows) after  
seeing some good recommendations. However, in setting up a new project  
I get the error below:

C:/ruby/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:271:in  
`require_frameworks': RubyGem version error: rack(1.0.0 not ~> 1.0.1) (RuntimeError) from C:/ruby/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb: 134:in`process’  
from C:/ruby/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:  
113:in `send' from C:/ruby/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb: 113:in`run’  
from C:/Documents and Settings/Sonia Bracegirdle/My Documents/Aptana  
RadRails Workspace/Tig/config/environment.rb:9  
from C:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:31:in  
`gem_original_require' from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require’  
from C:/ruby/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/  
generate.rb:1  
from C:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:31:in  
`gem_original_require' from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require’  
from C:/Documents and Settings/Sonia Bracegirdle/My Documents/Aptana  
RadRails Workspace/Tig/script/generate:3

I’ve tried $ gem install rack to update the version (to 1.1.0):

> gem install rack  
> Successfully installed rack-1.1.0  
> 1 gem installed  
> Installing ri documentation for rack-1.1.0…  
> Installing RDoc documentation for rack-1.1.0…

However, this doesn’t seem to help and I still get the error message  
above with further operations. Any help would be much appreciated!

Tig

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<div class="post-metadata">

**Author:** ![Tig](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/73ab20/32.png) [@Tig](https://www.ruby-forum.com/u/Tig)\
**Post date:** [April 6, 2010, 9:36am UTC](https://www.ruby-forum.com/t/using-radrails/186374/2 "2010-04-06T09:36:03Z")

</div>

> C:/ruby/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:271:in  
> `require\_frameworks’: RubyGem version error: rack(1.0.0 not ~\> 1.0.1)  
> (RuntimeError)  
> …  
> I’ve tried $ gem install rack to update the version (to 1.1.0):

I would try installing the version of rack it’s asking for instead:

gem install rack -v="=1.0.1"

FYI:

Looks like you had 1.0.0 installed already the first complaint was that  
1.0.0 wasn’t equal to or greater than version 1.0.1

Then you installed 1.1.0 however the dependency is ~\> (notice the tilde)  
which means anything from 1.0.1 to 1.0.x (i.e. 1.1.0 is too high a  
version number).

Kind Regards  
Luke

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<div class="post-metadata">

**Author:** ![Tig](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/73ab20/32.png) [@Tig](https://www.ruby-forum.com/u/Tig)\
**Post date:** [April 6, 2010, 9:47am UTC](https://www.ruby-forum.com/t/using-radrails/186374/3 "2010-04-06T09:47:40Z")

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You must have the two versions installed:

gem list rack

\*\*\* LOCAL GEMS \*\*\*

rack (1.1.0, 1.0.1)

So if you have installed the 1.1.0 version and have uninstalled the  
1.0.1 version simply reinstall the previous version:

gem install rack -v 1.0.1

Hope this helps