# Zlib error

**URL:** <https://www.ruby-forum.com/t/zlib-error/196885>\
**Category:** Rails\
**Created:** [January 20, 2009, 2:26pm UTC](https://www.ruby-forum.com/t/zlib-error/196885 "2009-01-20T14:26:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![arun](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/ee7513/32.png) [@arun](https://www.ruby-forum.com/u/arun)\
**Post date:** [January 20, 2009, 2:26pm UTC](https://www.ruby-forum.com/t/zlib-error/196885/1 "2009-01-20T14:26:07Z")

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Hi,

After installing the rubygems 1.3.1, I face the following issues while  
installing new gems.

Error:

arun@mysystem:~/Desktop$ sudo gem install ip2country-0.0.2.gem

ERROR: While executing gem … (Zlib::GzipFile::Error)  
not in gzip format

My Environment:

OS - ubuntu 8.04 - the Hardy Heron version.

Ruby - ruby 1.8.6 (2007-09-24 patchlevel 111) [i486-linux]

RubyGems Environment:

- RUBYGEMS VERSION: 1.3.1
- RUBY VERSION: 1.8.6 (2007-09-24 patchlevel 111) [i486-linux]
- INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8
- RUBY EXECUTABLE: /usr/bin/ruby1.8
- EXECUTABLE DIRECTORY: /usr/bin
- RUBYGEMS PLATFORMS:
  - ruby
  - x86-linux

- GEM PATHS:
  - /usr/lib/ruby/gems/1.8
  - /home/arun/.gem/ruby/1.8

- GEM CONFIGURATION:
  - :update\_sources =\> true
  - :verbose =\> true
  - :benchmark =\> false
  - :backtrace =\> false
  - :bulk\_threshold =\> 1000

- REMOTE SOURCES:
  - [http://gems.rubyforge.org/](http://gems.rubyforge.org/)

Please suggest a solution. I want to install required gems. Do i need to  
revert my rubygems version? because in my older version rubygems-1.0.1,  
i dont see any errors. is it a bug in rubygems-1.3.1 or do i need to  
change anything?

Thanks,

Arun.