404. That’s an error.

The requested URL /bookmarks/mark?op=edit&output=popup&bkmk=https%3A%2F%2Fforum.open-xchange.com%2Fshowthread.php%3Ft%3D179&title=Strange+Errors%2C+during+compile+-+%22DataWriter.java%3A80%3A+cannot+find+symbol%22 was not found on this server. That’s all we know.