# Rubygems - 404 Error for gems.datamapper.org/yaml

**URL:** <https://www.ruby-forum.com/t/rubygems-404-error-for-gems-datamapper-org-yaml/143450>\
**Category:** Ruby\
**Created:** [July 18, 2008, 6:41pm UTC](https://www.ruby-forum.com/t/rubygems-404-error-for-gems-datamapper-org-yaml/143450 "2008-07-18T18:41:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kodama](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/439d5e/32.png) [@kodama](https://www.ruby-forum.com/u/kodama)\
**Post date:** [July 18, 2008, 6:41pm UTC](https://www.ruby-forum.com/t/rubygems-404-error-for-gems-datamapper-org-yaml/143450/1 "2008-07-18T18:41:18Z")

</div>

Hi everyone,  
I’m at my wits end here. I’ve been trying to install a gem all day, but  
Rubygems won’t let me because it keeps crashing while trying to update  
gem metadata for some Datamapper gems.

I had originally added the [gems.datamapper.org](http://gems.datamapper.org) repo to my sources, but  
now I can’t remove it, because…doh…Rubygems always wants to update  
metadata BEFORE running any command.

I’m on Mac OSX Leopard using the normal Ruby 1.8.6 that came with the  
box.

Below is a transcript of my trials and tribulations:

ca1-osx-l214:Library kodama$ gem install trollop  
Bulk updating Gem source index for: [http://gems.rubyforge.org/](http://gems.rubyforge.org/)  
ERROR: While executing gem … (Gem::RemoteSourceException)  
HTTP Response 404 fetching [http://gems.datamapper.org/yaml](http://gems.datamapper.org/yaml)  
ca1-osx-l214:Library kodama$ gem sources  
\*\*\* CURRENT SOURCES \*\*\*

[http://gems.rubyforge.org](http://gems.rubyforge.org)  
[http://gems.datamapper.org](http://gems.datamapper.org)  
ca1-osx-l214:Library kodama$ gem sources -r [http://gems.datamapper.org](http://gems.datamapper.org)  
Bulk updating Gem source index for: [http://gems.rubyforge.org/](http://gems.rubyforge.org/)  
ERROR: While executing gem … (Gem::RemoteSourceException)  
HTTP Response 404 fetching [http://gems.datamapper.org/yaml](http://gems.datamapper.org/yaml)  
ca1-osx-l214:Library kodama$ ping [http://gems.datamapper.org/yaml](http://gems.datamapper.org/yaml)  
ping: cannot resolve [http://gems.datamapper.org/yaml:](http://gems.datamapper.org/yaml:) Unknown host  
ca1-osx-l214:Library kodama$ echo Oh noes

Can anyone point me in the right direction on this?

Thank you very much,  
kodama

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<div class="post-metadata">

**Author:** ![kodama](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/439d5e/32.png) [@kodama](https://www.ruby-forum.com/u/kodama)\
**Post date:** [July 18, 2008, 6:59pm UTC](https://www.ruby-forum.com/t/rubygems-404-error-for-gems-datamapper-org-yaml/143450/2 "2008-07-18T18:59:38Z")

</div>

Ah:  
[http://groups.google.com/group/datamapper/browse\_thread/thread/7f574a69fb8a64c3-------------------------------------------------------------------------------](http://groups.google.com/group/datamapper/browse_thread/thread/7f574a69fb8a64c3-------------------------------------------------------------------------------)