Failed to attach the USB device

[bhe]

Hi all,
I'm trying to use usb connection from Neo Freerunner to my xubuntu 8.10 (as a guest OS on my Mac OS X)
but everytime I try to turning on the USB device, I always get this error message :

Code: Select all

Failed to attach the USB device Linux 2.6.24/s3c2410_udc RNDIS/Ethernet Gadget [0212] to the virtual machine xubuntu.
USB device 'Linux 2.6.24/s3c2410_udc RNDIS/Ethernet Gadget' with UUID {e7d4d297-f7c1-47be-98c7-fdcb99f7d020} is in use by someone else.

and this's the detail

Code: Select all

Result Code: 
NS_ERROR_FAILURE (0x80004005)
Component: HostUSBDevice
Interface: IHostUSBDevice {173b4b44-d268-4334-a00d-b6521c9a740a}
Callee: IConsole {9511bc54-15ee-4ddf-808e-472aba03809c}

anybody help me to fix this problem please,

thanks in advance