When debugging Rails applications, you may select scripts according to the server and debugger being used. We recommend using the fast Cylon debugger with the LightTPD server. You may optionally use the slow Ruby debugger with the WEBrick server. These options are set in the Options dialog (Tools, Options, Projects and Solutions, Ruby In Steel).
Settings for LightTPD
Debug script = scgi_service.rb
Web server script = lighttpd_server.bat
Settings for WEBrick
Debug script = webbrick_service.rb
Web server script = webbrick_server.bat
For information on other options relating to the debuggers and servers, see: Ruby and Database Paths, Scripts and Debugger