Honorbuddy disappears when I press login.

I start honorbuddy and my key appears, I press login and honorbuddy disappears and there is no prosess running.

Code:

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[12:20:57.036 N] Honorbuddy v2.5.13765.784 started.
[12:20:58.597 N] Logging in...
[12:20:58.761 N] T: 5247345087013483058 H: 2565633028
[12:20:59.527 N] Attaching to D3D9
[12:20:59.764 N] Error attaching Honorbuddy to WoW! - System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
  at System.Xml.XmlTextReaderImpl.Throw(Exception e)
  at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
  at System.Xml.XmlTextReaderImpl.ThrowInvalidChar(Char[] data, Int32 length, Int32 invCharPos)
  at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
  at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
  at System.Xml.XmlTextReaderImpl.Read()
  at System.Xml.XmlReader.MoveToContent()
  at System.Xml.Linq.XElement.Load(XmlReader reader, LoadOptions options)
  at System.Xml.Linq.XElement.Load(String uri, LoadOptions options)
  at System.Xml.Linq.XElement.Load(String uri)
  at Styx.Helpers.Settings.Load()
  at Styx.Helpers.Settings..ctor(String settingsPath, String oldSettingsPath)
  at Styx.Helpers.CharacterSettings..ctor()
  at Styx.StyxWoW.()
  at Styx.StyxWoW.(Process , GraphicsApi )
  at Honorbuddy.MainWindow.<FindAndAttachToWoW>d__58.MoveNext()

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Honorbuddy disappears when I press login.