USBHIDDRIVER.dll keeps windows form application running

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What steps will reproduce the problem?
1. Windows Form Application keeps running when main form is closed due to 
USBInterface object.
 Attempting to Dispose UsbInterface object by:
 usb.stopRead(); 
 usb.Disconnect();
 usb = null; 
throw NullReferenceException on Disconnect() .


What is the expected output? What do you see instead?
usb Object is Connected and Reading when steps above are executed.


What version of the product are you using? On what operating system?
using MS .NET 2.0


Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 28 Jan 2008 at 10:04