title: LibUsbDotNet doesn't open device
body: <p>I use latest LibUsbDotNet nuget package in Visual Studio 2017 on Win 10. For my full speed USB device with 2 interrupt endpoints and 1 bulk IN endpoint I installed WinUSB driver using zadiq 2.4 utility.</p>
  
  <p>LibUsbDotNet can see my device when UsbDevice.AllDevices is called.</p>
  
  <p>However, it can't open my device using:</p>
  
  <pre><code>UsbDeviceFinder MyUsbFinder = new UsbDeviceFinder(VID, PID);
  UsbDevice MyUsbDevice = UsbDevice.OpenUsbDevice(MyUsbFinder);
  </code></pre>
  
  <p>MyUsbDevice is null, no exception thrown.</p>
  
  <p>I also tried to install different drivers (libusbk and libusb-win32), with no success.</p>
  
  <p>Some time ago I coded an C++ app to communicate with my USB device using libusb library - and it works since then without any issue.</p>
  
  <p>Is there anyone who can confirm that libusbdotnet is working product? I welcome any advice how to find what is wrong. Thanks.</p>