I didn't set up USB right? Or why it give me this error?

[Kdar]

Could not load the Host USB Proxy Service (VERR_FILE_NOT_FOUND). The service might be not installed on the host computer.


Result Code:
NS_ERROR_FAILURE (0x00004005)
Component:
Host
Interface:
IHost {f39438d7-abfd-409b-bc80-5f5291d92897}
Callee:
IMachine {ea6fb7ea-1993-4642-b113-f29eb39e0df0}


Is it normal? Or I need to do something?

--
http://ubuntuforums.org/showthread.php?t=770745
I followed instractions from there. but I was not able to find something similar to:
#
# Magic to make /proc/bus/usb work
#
#mkdir -p /dev/bus/usb/.usbfs
#domount usbfs "" /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
#ln -s .usbfs/devices /dev/bus/usb/devices
#mount --rbind /dev/bus/usb /proc/bus/usb

I have this:
#! /bin/sh
### BEGIN INIT INFO
# Provides: mountdevsubfs
# Required-Start: mountkernfs
# Required-Stop:
# Should-Start: udev
# Default-Start: S
# Default-Stop:
# Short-Description: Mount special file systems under /dev.
# Description: Mount the virtual filesystems the kernel provides
# that ordinarily live under the /dev filesystem.
### END INIT INFO
#
# This script gets called multiple times during boot
#

PATH=/lib/init:/sbin:/bin
TTYGRP=5
TTYMODE=620
[ -f /etc/default/devpts ] && . /etc/default/devpts

TMPFS_SIZE=
[ -f /etc/default/tmpfs ] && . /etc/default/tmpfs

KERNEL="$(uname -s)"

. /lib/lsb/init-functions
. /lib/init/mount-functions.sh

do_start () {
#
# Mount a tmpfs on /dev/shm
#
SHM_OPT=
[ "${SHM_SIZE:=$TMPFS_SIZE}" ] && SHM_OPT=",size=$SHM_SIZE"
domount tmpfs shmfs /dev/shm tmpfs -onosuid,nodev$SHM_OPT

#
# Mount /dev/pts. Master ptmx node is already created by udev.
#
domount devpts "" /dev/pts devpts -onoexec,nosuid,gid=$TTYGRP,mode=$TTYMODE
}

case "$1" in
"")
echo "Warning: mountdevsubfs should be called with the 'start' argument." >&2
do_start
;;
start)
do_start
;;
restart|reload|force-reload)
echo "Error: argument '$1' not supported" >&2
exit 3
;;
stop)
# No-op
;;
*)
echo "Usage: mountdevsubfs [start|stop]" >&2
exit 3
;;
esac

[Dedoimedo]

Add those four (uncommented) lines to the end of do_start function, just before the closing bracket.
Dedoimedo

[Kdar]

I did. But still getting the same error message.

#! /bin/sh
### BEGIN INIT INFO
# Provides: mountdevsubfs
# Required-Start: mountkernfs
# Required-Stop:
# Should-Start: udev
# Default-Start: S
# Default-Stop:
# Short-Description: Mount special file systems under /dev.
# Description: Mount the virtual filesystems the kernel provides
# that ordinarily live under the /dev filesystem.
### END INIT INFO
#
# This script gets called multiple times during boot
#


PATH=/lib/init:/sbin:/bin
TTYGRP=5
TTYMODE=620
[ -f /etc/default/devpts ] && . /etc/default/devpts

TMPFS_SIZE=
[ -f /etc/default/tmpfs ] && . /etc/default/tmpfs

KERNEL="$(uname -s)"

. /lib/lsb/init-functions
. /lib/init/mount-functions.sh

do_start () {
#
# Mount a tmpfs on /dev/shm
#
SHM_OPT=
[ "${SHM_SIZE:=$TMPFS_SIZE}" ] && SHM_OPT=",size=$SHM_SIZE"
domount tmpfs shmfs /dev/shm tmpfs -onosuid,nodev$SHM_OPT

#
# Mount /dev/pts. Master ptmx node is already created by udev.
#
domount devpts "" /dev/pts devpts -onoexec,nosuid,gid=$TTYGRP,mode=$TTYMODE

mkdir -p /dev/bus/usb/.usbfs
domount usbfs "" /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
ln -s .usbfs/devices /dev/bus/usb/devices
mount --rbind /dev/bus/usb /proc/bus/usb
}

case "$1" in
"")
echo "Warning: mountdevsubfs should be called with the 'start' argument." >&2
do_start
;;
start)
do_start
;;
restart|reload|force-reload)
echo "Error: argument '$1' not supported" >&2
exit 3
;;
stop)
# No-op
;;
*)
echo "Usage: mountdevsubfs [start|stop]" >&2
exit 3
;;
esac

[HotShotDJ]

To get USB working in VirtualBox, follow the instructions given in the Virtualization Mega-Thread at the very top of the Virtualization sub-forum. To save you some time, here is the specific part you want: http://ubuntuforums.org/showpost.php?p=6122145

[Kdar]

Sorry. I got it working now.
I think I forgot to start that file. that why it didn't work for me.