I also have this issue:
[06:49:23.038 N] Honorbuddy v2.5.10275.574 started.
[06:49:23.039 Q] This is a BETA build of Honorbuddy. This is not meant for general usage. Please report any issues you may have in the beta thread on our forums.
[06:49:23.039 Q] This build may have bugs, and new features which may not be fully tested. Use at your own risk!
[06:49:23.052 N] Logging in...
[06:49:23.549 N] T: 5247032984059068210 H: 2960390103
[06:49:33.160 N] Attaching to D3D11
[06:49:33.324 N] Attached to WoW with ID 2624
[06:49:33.390 D] System.TypeInitializationException: The type initializer for 'Styx.Helpers.UISettings' threw an exception. ---> 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 Styx.Helpers.Settings..ctor(String settingsPath, String oldSettingsPath)
at Styx.Helpers.UISettings..ctor()
at Styx.Helpers.UISettings..cctor()
--- End of inner exception stack trace ---
at Honorbuddy.MainWindow.LoadSettings()
at Honorbuddy.MainWindow.HandleSuccess()
