smlhelperproblem

[QModManager] [QModPatchMethod] [Error] Invoking the specified entry method "FirstStart" failed for mod "BetterSeaglide"
[QModManager] [QModPatchMethod] [Exception] System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeLoadException: Could not resolve type with token 01000020 (from typeref, class/assembly SMLHelper.V2.Utility.PlayerPrefsExtra, SMLHelper, Version=2.5.3.0, Culture=neutral, PublicKeyToken=null)
  at BetterSeaglide.MainPatch.FirstStart () [0x00000] in <ff414fbe8eb641a09f450fb839fb59c9>: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 <599589bf4ce248909b8a14cbe4a2034e>:0
   --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00048] in <599589bf4ce248909b8a14cbe4a2034e>:0
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <599589bf4ce248909b8a14cbe4a2034e>:0
  at QModManager.Patching.QModPatchMethod.TryInvoke () [0x00034] in <5614dd713f8d4c7c9b81c26e1c94df8c>:0
[QModManager] [Patcher] [Info] Finished loading QModManager. Loaded 1 mods
[QModManager] [Patcher] [Warn] A total of 2 mods failed to load
[QModManager] [SummaryLogger] [Error] The following mods failed during patching
- Better Seaglide (BetterSeaglide)
[QModManager] [SummaryLogger] [Error] The following mods had no patch methods to run
- SMLHelper (Modding Helper) (SMLHelper)