I got a mysql_adapter 471 bug

I’m a greeen hand. I am learning ruby on rails by myself. However,
when I was tring to create the first demo website following the book
<<Agile_Web_Development_With_Rails>>, it reported that there was an
bug[segment fault] in the file “mysql_adapter.rb”.
My OS:windows vista.
database: is mysql 5.0
rails: 2.0.2
ruby: 1.8.6 [i386-minwin32]
I used the command: “rails demo --database=mysql” to create the
And here is the original report:

http://localhost:3000/ -> /images/rails.png
dapters/mysql_adapter.rb:471: [BUG] Segmentation fault
ruby 1.8.6 (2007-09-24) [i386-mswin32]

This application has requested the Runtime to terminate it in an
unusual way.
Please contact the application’s support team for more information.

It happened when i just click the title “About your application’s
environment” in the web page"http://localhost:3000"

First Post!
My English is not so good, sorry about that!