Interchange delete old data and create temp structures. The first time

an error ocurred, because we were trying to access an no-existent dir.

backup/backup_execute.html

@@ -104,13 +104,6 @@
     //Start the main ul
     echo "<ul>";
 
-    //Delete old_entries from backup tables
-    echo "<li>Deteting old data";
-    $status = backup_delete_old_data();
-    if (!$status) {
-        error ("An error has ocurred");
-    }
-
     //Check for temp and backup and backup_unique_code directory
     //Create them as needed
     echo "<li>Creating temporary structures";
@@ -120,6 +113,13 @@
         $status = clear_backup_dir($backup_unique_code);
     }
 
+    //Delete old_entries from backup tables
+    echo "<li>Deteting old data";
+    $status = backup_delete_old_data();
+    if (!$status) {
+        error ("An error has ocurred");
+    }
+
     //Create the moodle.xml file
     if ($status) {
         echo "<li>Creating xml file";