mysql compatibility error--already reported by another correspondent

C:/Ruby193/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11-x86-
mingw32/lib/mysql2/mysql2.rb:2:in `require': Incorrect MySQL client librar
y version! This gem was compiled for 6.0.0 but the client library is 5.5.19.
(RuntimeError)

This has been asked several times on the group, please search before
asking.

Also, see this:
http://blog.mmediasys.com/2011/07/07/installing-mysql-on-windows-7-x64-and-using-ruby-with-it/

Contains compilation instructions to avoid version mismatch between
the compiled extension (inside the mysql2 gem) and the library
libmysql.dll

If you need further assistance, feel free to post to RubyInstaller
group:
https://groups.google.com/group/rubyinstaller/

(This was also answered there too)

I found a workaround for this problem --
http://blog.readypulse.com/2011/12/07/installing-ruby-on-rails-3-1-1-with-mysql-on-windows-7-64-bit/#comment-84