if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_XS.jpg')) $item->imageXSmall = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_XS.jpg'; if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_S.jpg')) $item->imageSmall = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_S.jpg'; if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_M.jpg')) $item->imageMedium = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_M.jpg'; if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_L.jpg')) $item->imageLarge = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_L.jpg'; if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_XL.jpg')) $item->imageXLarge = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg'; if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_Generic.jpg')) $item->imageGeneric = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_Generic.jpg'; replace those lines with this code: if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_XS.jpg')) $item->imageXSmall = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_XS.jpg'; else $item->imageXSmall = K2ModelItem::rebuildImageFromSrc(md5("Image".$item->id), $item->params, 'xsmall'); if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_S.jpg')) $item->imageSmall = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_S.jpg'; else $item->imageSmall = K2ModelItem::rebuildImageFromSrc(md5("Image".$item->id), $item->params, 'small'); if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_M.jpg')) $item->imageMedium = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_M.jpg'; else $item->imageMedium = K2ModelItem::rebuildImageFromSrc(md5("Image".$item->id), $item->params, 'medium'); if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_L.jpg')) $item->imageLarge = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_L.jpg'; else $item->imageLarge = K2ModelItem::rebuildImageFromSrc(md5("Image".$item->id), $item->params, 'large'); if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_XL.jpg')) $item->imageXLarge = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg'; else $item->imageXLarge = K2ModelItem::rebuildImageFromSrc(md5("Image".$item->id), $item->params, 'xlarge'); if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_Generic.jpg')) $item->imageGeneric = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_Generic.jpg'; else $item->imageGeneric = K2ModelItem::rebuildImageFromSrc(md5("Image".$item->id), $item->params, 'generic'); and finally at the end of class K2ModelItem (just before the last } ) add this new function: function rebuildImageFromSrc ($srcImage, $params, $newImgSize) { if (!JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'src'.DS.$srcImage.'.jpg')) return ""; require_once (JPATH_COMPONENT_ADMINISTRATOR.DS.'lib'.DS.'class.upload.php'); $handle = new Upload(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'src'.DS.$srcImage.'.jpg'); $handle->allowed = array('image/*'); $handle->image_resize = true; $handle->image_ratio_y = true; $handle->image_convert = 'jpg'; $handle->jpeg_quality = $params->get('imagesQuality'); $handle->file_auto_rename = false; $handle->file_overwrite = false; switch($newImgSize) { case 'xlarge': $handle->file_new_name_body = $srcImage.'_XL'; $imageWidth = $params->get('itemImageXL', '800'); $handle->image_x = $imageWidth; break; case 'large': $handle->file_new_name_body = $srcImage.'_L'; $imageWidth = $params->get('itemImageL', '600'); $handle->image_x = $imageWidth; break; case 'medium': $handle->file_new_name_body = $srcImage.'_M'; $imageWidth = $params->get('itemImageM', '400'); $handle->image_x = $imageWidth; break; case 'small': $handle->file_new_name_body = $srcImage.'_S'; $imageWidth = $params->get('itemImageS', '200'); $handle->image_x = $imageWidth; break; case 'xsmall': $handle->file_new_name_body = $srcImage.'_XS'; $imageWidth = $params->get('itemImageXS', '100'); $handle->image_x = $imageWidth; break; case 'generic': $handle->file_new_name_body = $srcImage.'_Generic'; $imageWidth = $params->get('itemImageGeneric', '300'); $handle->image_x = $imageWidth; break; } $handle->Process(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'); return JURI::root().'media/k2/items/cache/'.$handle->file_dst_name_body.'.jpg'; } That's all, i hope that you enjoy the new function!! Now if you delete some or all images from the cache folder, they are rebuilded from their sources (using the new size if it has changed). It works fine for me... kind regards,