Nullref in ArduinoUploader.dll

[JelleDekkers]

When trying to run a simple console app with the given .NET sample code I get a NullReferenceException in ArduinoUploader.dll.

I successfully installed the library and it's dependencies via NuGet and all the references are found. Also tried restoring NuGet packages but it says there's nothing to restore.

StackTrace:
at ArduinoUploader.BootloaderProgrammers.ResetBehavior.ResetThroughTogglingDtrRtsBehavior.Reset(SerialPortStream serialPort, SerialPortConfig config)
at ArduinoUploader.BootloaderProgrammers.ArduinoBootloaderProgrammer.Close()
at ArduinoUploader.ArduinoSketchUploader.UploadSketch(IEnumerable`1 hexFileContents)
at ArduinoUploader.ArduinoSketchUploader.UploadSketch()
at ArduinoUploadTest.Program.Main(String[] args) in C:\Users\Jelle Dekkers\source\repos\ArduinoUploadTest\ArduinoUploadTest\Program.cs:line 21