diff --git a/lib/filenotfoundexception.php b/lib/filenotfoundexception.php
index d3610249db..70dd2d0b5d 100644
--- a/lib/filenotfoundexception.php
+++ b/lib/filenotfoundexception.php
@@ -36,6 +36,7 @@ class FileNotFoundException extends ServerException
     public function __construct($path)
     {
         $this->path = $path;
+        common_debug('File not found exception for: '._ve($this->path));
         parent::__construct(_('File not found in filesystem.'), 404);
     }
 }
diff --git a/lib/mediafile.php b/lib/mediafile.php
index 1e0fb39769..7534dc53cb 100644
--- a/lib/mediafile.php
+++ b/lib/mediafile.php
@@ -306,10 +306,10 @@ class MediaFile
             $result = copy($stream['uri'], $filepath) && chmod($filepath, 0664);
 
             if (!$result) {
+                common_log(LOG_ERR, 'File could not be moved (or chmodded) from '._ve($stream['uri']) . ' to ' . _ve($filepath));
                 // TRANS: Client exception thrown when a file upload operation fails because the file could
                 // TRANS: not be moved from the temporary folder to the permanent file location.
-                throw new ClientException(_('File could not be moved to destination directory.' .
-                    $stream['uri'] . ' ' . $filepath));
+                throw new ClientException(_('File could not be moved to destination directory.' ));
             }
         }