# Correctly upgrading ruby on MS Windows

**URL:** <https://www.ruby-forum.com/t/correctly-upgrading-ruby-on-ms-windows/173147>\
**Category:** Rails\
**Created:** [August 4, 2009, 3:16am UTC](https://www.ruby-forum.com/t/correctly-upgrading-ruby-on-ms-windows/173147 "2009-08-04T03:16:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rubynewbie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/58f4c7/32.png) [@rubynewbie](https://www.ruby-forum.com/u/rubynewbie)\
**Post date:** [August 4, 2009, 3:16am UTC](https://www.ruby-forum.com/t/correctly-upgrading-ruby-on-ms-windows/173147/1 "2009-08-04T03:16:28Z")

</div>

Hi, I am looking for some guidance on the correct and/or most  
streamlined way to upgrade Ruby. Presently I am on Ruby version 1.8.6  
patch level 111. I am looking to upgrade to version 1.8.6 patch level  
287. When I tried downloading the ruby-1.8.6-p287-i386-mswin32.zip  
file I unzipped it and was optmistically hoping that i could take all  
of its files and overlay my current installation. When I checked the  
rails version with (rails -v), I get the following error:  
D:\Mercury\GreenLight\server\>rails -v  
c:/ruby/lib/ruby/site\_ruby/1.8/rubygems.rb:713:in `set_paths': undefined method`uid’ for nil:NilClass (NoMethodError)  
from c:/ruby/lib/ruby/site\_ruby/1.8/rubygems.rb:711:in `each' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:711:in`set\_paths’  
from c:/ruby/lib/ruby/site\_ruby/1.8/rubygems.rb:518:in `path' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/source_index.rb: 66:in`installed\_spec\_directories’  
from c:/ruby/lib/ruby/site\_ruby/1.8/rubygems/source\_index.rb:  
56:in `from_installed_gems' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:726:in`source\_index’  
from c:/ruby/lib/ruby/site\_ruby/1.8/rubygems.rb:138:in  
`activate' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:49:in`gem’  
from c:/ruby/bin/rails:18

I also saw that ruby/script console and ruby script/server -e commands  
also failed. I’ve tried renaming the current c:\ruby directory and  
just creating ane c:\ruby directory with just the patch level 287’s  
contents and that fails because some of the binaries are missing.  
Which gems and/or plugin require reinstallation after a correct  
upgrade? Please advise?