TcMapMarkers was compiled successfully in 2832ms
Failed to call hook 'OnServerInitialized' on plugin 'TcMapMarkers v1.0.1' (FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.)
  at System.Text.StringBuilder.AppendFormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x000ff] in <437ba245d8404784b9fbab9b439ac908>:0
  at System.String.FormatHelper (System.IFormatProvider provider, System.String format, System.ParamsArray args) [0x00023] in <437ba245d8404784b9fbab9b439ac908>:0
  at System.String.Format (System.String format, System.Object[] args) [0x00020] in <437ba245d8404784b9fbab9b439ac908>:0
  at Oxide.Plugins.TcMapMarkers.Lang (System.String key, System.String id, System.Object[] args) [0x0000e] in <55c8d85bbdd04d748353947eaaa2e622>:0
  at Oxide.Plugins.TcMapMarkers.LoadMapMarkers () [0x000e3] in <55c8d85bbdd04d748353947eaaa2e622>:0
  at Oxide.Plugins.TcMapMarkers.OnServerInitialized (System.Boolean initial) [0x00000] in <55c8d85bbdd04d748353947eaaa2e622>:0
  at Oxide.Plugins.TcMapMarkers.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x000b7] in <55c8d85bbdd04d748353947eaaa2e622>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <d09a1f46ca2f4432811bcfe45ad13c7b>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cf88a28c7fb44d36890d85a78331cc9d>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cf88a28c7fb44d36890d85a78331cc9d>:0

Thanks for reporting, will try to fix it today.

Merged post

Should be fixed now in the newest version. Let me know if you still have ant issues.