Well you are going to need someone to take a peek under the hood. Gizmo is lurking here now. I would ask him. Or open a support ticket. I would suspect you have a bad or missing file. I do recall there were some issues with the language files early
Well another great experience with them. I had a self inflicted issue and after submitting a ticket. Tom took care of it and moved my domain as asked and corrected the config.inc.php file without asking. Before I could respond. Wow!