Having trouble getting the debugger to work with Drupal 7.13

Hello

I am quite new to PHPStorm and from what I have seen so far it looks to be a great tool. I am trying to use the debugger with an application I am developing for Drupal and am having a problem with a Fatal "Class not found" error. I suspect that I am having a configuration issue and this could well be a Drupal issue.

I am using Drupal 7.13, XAMPP 1.7.7 for Windows. I am using PHP 5.3.8. I have enabled Xdebug in the php.ini file

I found setting up the debugger a bit confusing and the documentation a bit vague.

When I run the debugger I am now getting a Fatal error: Class 'Drush_CommandTestCase' not found in develDrushTest.php

The debug output shows an include_once for develDrushTest.php

I would appreciate any assistance in getting the debugger to work in my environment.

Regards

Richard