Problem with db:test:prepare


I am learning Rails from "Agile Web Development with Rails" (third edition) by implementing the Depot example. This is an excellent book to learn Rails.

However, I have a problem in the chapter 14, Testing, in which I had to run the command: db:test:prepare. It gave the following result;

      in C:/MyProjects/dev/webshop)
      rake aborted!
      Task not supported by 'jdbcmysql'
      rake aborted!
      invalid meta-code syntax: /C:\MyProjects\dev\webshop\Rakefile/

I am using the Netbeans 6.8 IDE with WeBrick as the application server.

Can anyone give me a clue how to solve that problem?

Thanks in advance,