id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
9094	'Failed to access the USB subsystem' error,  when accessing settings for an image and no USB devices	bikehead		"My windows7 guest is running pretty well on my Fedora 15 host, but I cannot get Vbox to access any of my USB devices.  This F15 is a fresh install as is the VirtualBox rpm and the Windows 7 guest.

At guest start everything looks normal with no error messages.  However, when I use machine->devices->USB I don't see any attached USB devices.  When I access ""settings"" for the machine I get the following pop up:
  Failed to access the USB subsystem.
  Could not load the Host USB Proxy Service (VERR_FILE_NOT_FOUND). The service might not be installed on the host computer.

followed by:
  Result Code: 
  NS_ERROR_FAILURE (0x00004005)
  Component: 
   Host
  Interface: 
   IHost {35b004f4-7806-4009-bfa8-d1308adba7e5}
  Callee: 
   IMachine {662c175e-a69d-40b8-a77a-1d719d0ab062}

"	defect	closed	USB	VirtualBox 4.0.8	worksforme			Windows	Linux