# Problems getting started

**URL:** <https://www.ruby-forum.com/t/problems-getting-started/187230>\
**Category:** Rails\
**Created:** [April 20, 2010, 9:14am UTC](https://www.ruby-forum.com/t/problems-getting-started/187230 "2010-04-20T09:14:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JSF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/898d66/32.png) [@JSF](https://www.ruby-forum.com/u/JSF)\
**Post date:** [April 20, 2010, 9:14am UTC](https://www.ruby-forum.com/t/problems-getting-started/187230/1 "2010-04-20T09:14:09Z")

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i’ve run update and update system… now, when i run script/server I  
get this output:

-------------snip-----------------

/opt/local/lib/ruby/site\_ruby/1.8/rubygems.rb:777:in  
`report_activate_error': RubyGem version error: rack(1.0.0 not ~> 1.0.1) (Gem::LoadError) from /opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:211:in`activate’  
from /opt/local/lib/ruby/site\_ruby/1.8/rubygems.rb:1056:in `gem' from /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/ action_controller.rb:34 from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in`gem\_original\_require’  
from /opt/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:  
31:in `require' from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active_support/dependencies.rb:156:in`require’  
from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/  
active\_support/dependencies.rb:521:in `new_constants_in' from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active_support/dependencies.rb:156:in`require’  
from /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/  
server.rb:2  
from /opt/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:  
31:in `gem_original_require' from /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in`require’

-------------snip-----------------

any thoughts?

TIA,

J

---

<div class="post-metadata">

**Author:** ![JSF](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/898d66/32.png) [@JSF](https://www.ruby-forum.com/u/JSF)\
**Post date:** [April 20, 2010, 9:33am UTC](https://www.ruby-forum.com/t/problems-getting-started/187230/2 "2010-04-20T09:33:28Z")

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On Tue, Apr 20, 2010 at 3:04 AM, JSF [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> `report\_activate\_error’: RubyGem version error: rack(1.0.0 not ~\>  
> 1.0.1) (Gem::LoadError)

That’s the source of the error, you need to update your rack gem.  
Try:

gem install rack -v 1.0.1