# Rubygem problems (maybe just on MacOS 10.4)

**URL:** <https://www.ruby-forum.com/t/rubygem-problems-maybe-just-on-macos-10-4/86314>\
**Category:** Ruby\
**Created:** [February 21, 2007, 11:57am UTC](https://www.ruby-forum.com/t/rubygem-problems-maybe-just-on-macos-10-4/86314 "2007-02-21T11:57:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Vassilis\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/848f3c/32.png) [@Vassilis\_R](https://www.ruby-forum.com/u/Vassilis_R)\
**Post date:** [February 21, 2007, 11:57am UTC](https://www.ruby-forum.com/t/rubygem-problems-maybe-just-on-macos-10-4/86314/1 "2007-02-21T11:57:00Z")

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It looks like there is a problem (I don’t know if it is Mac specific -  
although I do not think so) with gem and proxies:

meisterbrau:~ riva$ gem update --http-proxy [http://my.proxy.com:8080](http://my.proxy.com:8080)  
ERROR: While executing gem … (NoMethodError)  
undefined method `[]=’ for #Gem::ConfigFile:0x1087518

I have a Macports installation

meisterbrau:~ riva$ ruby -v  
ruby 1.8.5 (2006-12-25 patchlevel 12) [i686-darwin8.8.2]  
meisterbrau:~ riva$ gem -v  
0.9.1

Any ideas?  
Cheers,  
V.-