# Ruby 1.9.1p0 (2009-01-30 revision 21907)

**URL:** <https://www.ruby-forum.com/t/ruby-1-9-1p0-2009-01-30-revision-21907/173250>\
**Category:** Rails\
**Created:** [August 5, 2009, 5:50pm UTC](https://www.ruby-forum.com/t/ruby-1-9-1p0-2009-01-30-revision-21907/173250 "2009-08-05T17:50:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![calvin98115](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/7ea924/32.png) [@calvin98115](https://www.ruby-forum.com/u/calvin98115)\
**Post date:** [August 5, 2009, 5:50pm UTC](https://www.ruby-forum.com/t/ruby-1-9-1p0-2009-01-30-revision-21907/173250/1 "2009-08-05T17:50:51Z")

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Hi, I am working on Windows XP and have install Ruby 1.9.1. After  
extracting Ruby 1.9.1 to c:\ruby I was able to issue ‘ruby -v’ and see  
that the intended version installs.

1. When I tried checking the rubygems version with ‘gem -v’ I get the  
following error:  
c:/ruby/lib/ruby/gems/1.9.1/gems/rubygems-update-1.3.5/lib/rubygems/config\_file.rb:39:in  
`new’: wrong number of arguments (5 for 4) (ArgumentError)

2. When I tried doing a ‘gem update --system’ I get the same error.

Questions:

1. Is it best to extract Ruby 1.9.1 into a fresh c:\ruby directory that  
is empty? Are you supposed to overlay it on a previous version, if so  
which version?

2. What version of RubyGems is recommended for Ruby 1.9.1 and is there a  
way to install a specific Rubygems version rather than just getting the  
latest?

3. What version of Rails is production ready for Ruby 1.9.1?

Thanks in advance, Calvin.

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<div class="post-metadata">

**Author:** ![calvin98115](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/7ea924/32.png) [@calvin98115](https://www.ruby-forum.com/u/calvin98115)\
**Post date:** [August 5, 2009, 8:53pm UTC](https://www.ruby-forum.com/t/ruby-1-9-1p0-2009-01-30-revision-21907/173250/2 "2009-08-05T20:53:05Z")

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On Wed, Aug 5, 2009 at 8:50 AM, Calvin  
Nguyen[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> 1. When I tried doing a ‘gem update --system’ I get the same error.
> 
> Questions:
> 
> 1. Is it best to extract Ruby 1.9.1 into a fresh c:\ruby directory that  
> is empty? Are you supposed to overlay it on a previous version, if so  
> which version?

A fresh install. 1.9.1p0 is very old too; upgrade to the latest  
patchlevel.

> 1. What version of RubyGems is recommended for Ruby 1.9.1 and is there a  
> way to install a specific Rubygems version rather than just getting the  
> latest?

RubyGems is bundled with 1.9.1.

> 1. What version of Rails is production ready for Ruby 1.9.1?

Rails has been 1.9 ready since 2.1. For best results, use 2.3.3 and  
the latest 1.9.1 release.

Best,  
jeremy