Created Unassigned: Issues with 5.4.6.0 [109]

I have today updated a project with Nuget to use ClearScript 5.4.6.0 but it is now throwing the following error

Exception: System.TypeLoadException

Message: Could not load type 'Microsoft.ClearScript.Util.INativeCallback' from assembly 'ClearScript, Version=5.4.6.0, Culture=neutral, PublicKeyToken=935d0c957da47c73'.

StackTrace: at HostObjectHelpers.QueueNativeCallback(function<void __cdecl(void)>* callback)

Any tips on what might be happening here?

Thanks