Good Morning,
  I'm really new to javax.usb. I-, trying to test it's functionality
with some test classes.
In the latter I wrote I had back this exception:

javax.usb.UsbException: Cannot claim an interface on a virtual root hub.
        at 
com.ibm.jusb.VirtualRootUsbHubImp$VirtualRootUsbInterfaceOsImp.claim(VirtualRootUsbHubImp.java:143)
        at 
com.ibm.jusb.os.DefaultUsbInterfaceOsImp.claim(DefaultUsbInterfaceOsImp.java:54)
        at com.ibm.jusb.UsbInterfaceImp.claim(UsbInterfaceImp.java:109)
        at com.ibm.jusb.UsbInterfaceImp.claim(UsbInterfaceImp.java:83)
        at NPTL.testIO.IO(testIO.java:32)
        at NPTL.testIO.main(testIO.java:15)

Does anyone could tell me why I have this error?

Thanks a lot,

-- 
Dr. Omar Adobati
[EMAIL PROTECTED]

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