Index: branches/RC/core/units/general/helpers/image_helper.php
===================================================================
diff -u -N -r11305 -r11721
--- branches/RC/core/units/general/helpers/image_helper.php	(.../image_helper.php)	(revision 11305)
+++ branches/RC/core/units/general/helpers/image_helper.php	(.../image_helper.php)	(revision 11721)
@@ -64,7 +64,7 @@
 
 				if ($needs_resize || array_key_exists('wm_filename', $params) && $params['wm_filename']) {
 					// resize required OR watermarking required -> change resulting image name !
-					$dst_image = preg_replace('/^'.preg_quote($src_path, '/').'(.*)\.(.*)$/', $src_path.'/resized\\1_'.crc32(serialize($params)).'.\\2', $src_image);
+					$dst_image = preg_replace('/^'.preg_quote($src_path, '/').'(.*)\.(.*)$/', $src_path . DIRECTORY_SEPARATOR . 'resized\\1_' . crc32(serialize($params)) . '.\\2', $src_image);
 					if (!file_exists($dst_image) || filemtime($src_image) > filemtime($dst_image)) {
 						// resized image not available OR should be recreated due source image change
 						$params['dst_image'] = $dst_image;
@@ -87,7 +87,7 @@
 			}
 
 			$base_url = rtrim($this->Application->BaseURL(), '/');
-			return preg_replace('/^'.preg_quote(FULL_PATH, '/').'(.*)/', $base_url.'\\1', $src_image);
+			return str_replace(DIRECTORY_SEPARATOR, '/', preg_replace('/^'.preg_quote(FULL_PATH, '/').'(.*)/', $base_url.'\\1', $src_image));
 		}
 
 		/**