Here is the url of my problem

Installation:
  1. zen-cart-v1.5.1-full-fileset-09182012
  2. ckeditor-412-for-zencart
  3. column_layout_grid_2_3_1
  4. CSS Horizontal Dropdown Menu With jquery
  5. Easy Attributes 1.3.91.5.0
  6. Flexible Return Authorizationv1_2
  7. friendly-bulk-upload-of-coupons
  8. quick_updates-v2.06a
  9. ultimate_seo_urls_212
  10. Image_Handler4_v4_3_2


Information from DOM source:
Main Image url:
Code:
src="images/medium/dir_name/458_MED.jpg"
Additional Images url:
Code:
src="images/dir_name/458_01.jpg"
In image handler admin:
Product: #34 Blazer Leather Jacket - 458
Model: Style - 458 Base directory: dir_name

Image name File Type
458 .jpg
458_01 .jpg
458_02 .jpg
etc
see attached screen shot
Click image for larger version. 

Name:	IH_4.jpg 
Views:	427 
Size:	18.6 KB 
ID:	13210

Shop Config:
Code:
  define('DIR_WS_IMAGES', 'images/');
  define('DIR_WS_ICONS', DIR_WS_IMAGES . 'icons/');
  define('DIR_WS_CATALOG_IMAGES', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'images/');
  define('DIR_WS_CATALOG_TEMPLATE', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'includes/templates/');
  define('DIR_WS_INCLUDES', 'includes/');
  define('DIR_WS_BOXES', DIR_WS_INCLUDES . 'boxes/');
  define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
  define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
  define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
  define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');
  define('DIR_WS_CATALOG_LANGUAGES', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'includes/languages/');
Admin Config:
Code:
  define('DIR_WS_IMAGES', 'images/');
  define('DIR_WS_ICONS', DIR_WS_IMAGES . 'icons/');
  define('DIR_WS_CATALOG_IMAGES', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'images/');
  define('DIR_WS_CATALOG_TEMPLATE', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'includes/templates/');
  define('DIR_WS_INCLUDES', 'includes/');
  define('DIR_WS_BOXES', DIR_WS_INCLUDES . 'boxes/');
  define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
  define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
  define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
  define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');
  define('DIR_WS_CATALOG_LANGUAGES', HTTP_CATALOG_SERVER . DIR_WS_CATALOG . 'includes/languages/');
What is wrong with my configuration?

Many thanks,

Goshawk