Error using Carbon

I've seen similar errors in the support section but none have really been answered, just closed. I'm getting the following error when loading the plugin:

Failed to call hook 'OnServerInitialized' on plugin 'WelcomePanel v3.2.0' (Object reference not set to an instance of an object)
  at Oxide.Plugins.WelcomePanel.CheckConfig () [0x0007e] in <0cec086daf534209a70411ef4f4b85ed>:0 
  at Oxide.Plugins.WelcomePanel.OnServerInitialized () [0x0001b] in <0cec086daf534209a70411ef4f4b85ed>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00032] in <fb001e01371b4adca20013e0ac763896>:0  
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

Currently on a test server trying to get Carbon working and updated to the latest version of this plugin but still nothing.

ditto 3.2.2