Wrong licence details. I changed my licence password last time and started emulator, I forgot to change the password in config.conf so it shows the error you also see. Glad if you could recheck your configuration file.
OFT: Scammer.
ONT: Well, what skin do you use? If Mango, copy & replace the client.php from the Priv folder to Mango folder in C:\(inetpub or xampp)\(wwwroot or htdocs)\app\tpl\skins. :)