# Bulk updating Gem source index for: http://gems.rubyforge.or

**URL:** <https://www.ruby-forum.com/t/bulk-updating-gem-source-index-for-http-gems-rubyforge-or/110625>\
**Category:** Rails\
**Created:** [July 28, 2007, 10:59am UTC](https://www.ruby-forum.com/t/bulk-updating-gem-source-index-for-http-gems-rubyforge-or/110625 "2007-07-28T10:59:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![varun\_kumar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/46a35a/32.png) [@varun\_kumar](https://www.ruby-forum.com/u/varun_kumar)\
**Post date:** [July 28, 2007, 10:59am UTC](https://www.ruby-forum.com/t/bulk-updating-gem-source-index-for-http-gems-rubyforge-or/110625/1 "2007-07-28T10:59:52Z")

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Hi all,

I’m having a bit of a problem with installing ruby on rails using gem  
on Windows XP. after  
gem install rails --include-dependencies  
it say as follows

Bulk updating Gem source index for: [http://gems.rubyforge.org](http://gems.rubyforge.org)  
ERROR: While executing gem … (Gem::InstallError)  
invalid gem format for c:/ruby/lib/ruby/gems/1.8/cache/  
actionpack-1.13.3.gem

Any idea what I’m doing wrong here?