# Problem installing gem mysql on vista

**URL:** <https://www.ruby-forum.com/t/problem-installing-gem-mysql-on-vista/88751>\
**Category:** Rails\
**Created:** [March 14, 2007, 12:55am UTC](https://www.ruby-forum.com/t/problem-installing-gem-mysql-on-vista/88751 "2007-03-14T00:55:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![matthew](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ed655f/32.png) [@matthew](https://www.ruby-forum.com/u/matthew)\
**Post date:** [March 14, 2007, 12:55am UTC](https://www.ruby-forum.com/t/problem-installing-gem-mysql-on-vista/88751/1 "2007-03-14T00:55:07Z")

</div>

Hi, I’m hoping that someone can point me right direction on this one.

I’m trying execute gem install mysql & am getting the following error  
message.

C:\Users\matt\>gem install mysql  
Bulk updating Gem source index for: [http://gems.rubyforge.org](http://gems.rubyforge.org)  
Select which gem to install for your platform (i386-mswin32)

1. mysql 2.7.3 (mswin32)
2. mysql 2.7.1 (mswin32)
3. mysql 2.7 (ruby)
4. mysql 2.6 (ruby)
5. Skip this gem
6. Cancel installation

> 1  
> Successfully installed mysql-2.7.3-mswin32  
> Installing ri documentation for mysql-2.7.3-mswin32…  
> Installing RDoc documentation for mysql-2.7.3-mswin32…  
> While generating documentation for mysql-2.7.3-mswin32  
> … MESSAGE: Unhandled special: Special: type=17, text=“”  
> … RDOC args: --op  
> c:/ruby/lib/ruby/gems/1.8/doc/mysql-2.7.3-mswin32/rdoc --exc  
> lude ext --main README --quiet ext README docs/README.html  
> (continuing with the rest of the installation)

It looks like it installs the gem, but has problems with Rdoc. When I  
try & execute rake, I get the following error:

C:\app\trunk\>rake  
(in C:/app/trunk)  
rake aborted!  
193: %1 is not a valid Win32 application. -  
c:/ruby/lib/ruby/gems/1.8/gems/mys  
ql-2.7.3-mswin32/ext/mysql.so

rgds,

- matt.