This probably happens because FSharp.Data.dll is not signed. Is there some reason why it's not signed?
System.IO.FileLoadException was unhandled by user code FileName=FSharp.Data, Version=2.3.2.0, Culture=neutral, PublicKeyToken=null FusionLog="" HResult=-2146234300 Message=Could not load file or assembly 'FSharp.Data, Version=2.3.2.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. A strongly-named assembly is required. (Exception from HRESULT: 0x80131044)