# An error of gem install

**URL:** <https://www.ruby-forum.com/t/an-error-of-gem-install/155110>\
**Category:** Rails\
**Created:** [December 8, 2008, 9:16am UTC](https://www.ruby-forum.com/t/an-error-of-gem-install/155110 "2008-12-08T09:16:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![youhaodeyi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/b9bd4f/32.png) [@youhaodeyi](https://www.ruby-forum.com/u/youhaodeyi)\
**Post date:** [December 8, 2008, 9:16am UTC](https://www.ruby-forum.com/t/an-error-of-gem-install/155110/1 "2008-12-08T09:16:10Z")

</div>

I worked on gem 0.9.4 in Fedora9 and when I run gem install \*\* I will  
get this error:

ERROR: While executing gem … (NoMethodError)  
undefined method `[]=’ for #Gem::ConfigFile:0xb7eaa3dc

Does anyone know this issue?

thanks.