--- imagecache.module.original	2008-10-22 12:33:43.000000000 +0200
+++ imagecache.module	2008-10-22 12:35:05.000000000 +0200
@@ -510,7 +510,7 @@ function imagecache_build_derivative($ac
 
   if (!imageapi_image_close($image, $dst)) {
     if (file_exists($dst)) {
-      watchdog('imagecache', 'Cached image file already exists. There is an issue with your Rewrite configuration.', WATCHDOG_ERROR);
+      watchdog('imagecache', 'Cached image file %dst already exists. There is an issue with your Rewrite configuration.', array('%dst' => $dst), WATCHDOG_ERROR);
     }
     return false;
   }