i need help please , i cant play my game i have this code error how to fix it ?

[FeThAlLaH bFs]

See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: '.', hexadecimal value 0x00, is an invalid character. Line 9, position 1. (C:\Users\bfs10\AppData\Local\Kaiba_Corporation\YGOPRO_Dawn_of_a_New_Era__Url_vqz1hutldhhd31truvq4lg4gssmtziil\5.6.2.4267\user.config line 9) ---> System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid

Continue reading...