(19:43:26) | Failed to call hook 'OnServerCommand' on plugin 'BetterSay v3.0.0' (ArgumentException: Invalid arguments: InputOffset and OutputOffset must be within the Length of their respective streams.)
  at EasyAntiCheat.Server.Hydra.NativeNetProtect.ProtectMessage (System.IntPtr ClientObject, System.IO.MemoryStream Input, System.Int64 InputOffset, System.IO.MemoryStream Output, System.Int64 OutputOffset) [0x00013] in <38c18108d7e74c54858d338ed60ca8f8>:0

  at EasyAntiCheat.Server.Hydra.NetProtect.NetProtect`1[TClient].ProtectMessage (TClient Client, System.IO.MemoryStream Input, System.Int64 InputOffset, System.IO.MemoryStream Output, System.Int64 OutputOffset) [0x00015] in <38c18108d7e74c54858d338ed60ca8f8>:0

  at EACServer.Encrypt (Network.Connection connection, System.IO.MemoryStream src, System.Int32 srcOffset, System.IO.MemoryStream dst, System.Int32 dstOffset) [0x00017] in <978f2df731184014b0b8bad03f02d630>:0

  at NetworkCryptographyServer.EncryptionHandler (Network.Connection connection, System.IO.MemoryStream src, System.Int32 srcOffset, System.IO.MemoryStream dst, System.Int32 dstOffset) [0x00009] in <978f2df731184014b0b8bad03f02d630>:0

  at NetworkCryptography.EncryptCopy (Network.Connection connection, System.IO.MemoryStream stream, System.Int32 offset) [0x0002d] in <978f2df731184014b0b8bad03f02d630>:0

  at Network.BaseNetwork.Encrypt (Network.Connection connection, System.IO.MemoryStream& stream) [0x00028] in <347e95ae219c4c9794cbc7c72800e4d5>:0

  at Facepunch.Network.Raknet.Server.Send (Network.SendInfo sendinfo, System.IO.MemoryStream data, Network.Connection connection) [0x00011] in <6e1f8037a0454a519bbd8cf21c8c4624>:0

  at Facepunch.Network.Raknet.Server.Send (Network.SendInfo sendinfo, System.IO.MemoryStream data) [0x0001e] in <6e1f8037a0454a519bbd8cf21c8c4624>:0

  at Network.NetWrite.Send (Network.SendInfo info) [0x00000] in <347e95ae219c4c9794cbc7c72800e4d5>:0

  at (wrapper remoting-invoke-with-check) Network.NetWrite.Send(Network.SendInfo)
  at ConsoleNetwork.BroadcastToAllClients (System.String strCommand, System.Object[] args) [0x0006a] in <978f2df731184014b0b8bad03f02d630>:0

  at Oxide.Game.Rust.Libraries.Server.Broadcast (System.String message, System.String prefix, System.UInt64 userId, System.Object[] args) [0x00037] in <c28b89f3a884441b8a62cb9d06ccc0ba>:0

  at Oxide.Game.Rust.Libraries.Server.Broadcast (System.String message, System.UInt64 userId) [0x00009] in <c28b89f3a884441b8a62cb9d06ccc0ba>:0

  at Oxide.Plugins.BetterSay.OnServerCommand (ConsoleSystem+Arg arg) [0x0018e] in <819955761a7f4aa8aeb8890c93cccfc7>:0

  at Oxide.Plugins.BetterSay.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00052] in <819955761a7f4aa8aeb8890c93cccfc7>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <ec05e0208c9149bba43236ca58fea105>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0

Not really sure what is causing this, just posting in case anyone else got the same. I'm investigating it atm and will post more along the way..