HP M1120 scan error

kfl62@kfl62:~> hp-check -t

HP Linux Imaging and Printing System (ver. 2.8.9)
Dependency/Version Check Utility ver. 14.0

Copyright (c) 2001-8 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Note: hp-check can be run in three modes:
1. Compile-time check mode (-c or --compile): Use this mode before compiling the HPLIP supplied tarball
(.tar.gz or .run) to determine if the proper dependencies are installed to successfully compile HPLIP.
2. Run-time check mode (-r or --run): Use this mode to determine if a distro supplied package (.deb, .rpm, etc)
or an already built HPLIP supplied tarball has the proper dependencies installed to successfully run.
3. Both compile- and run-time check mode (-b or --both) (Default): This mode will check both of the above cases
(both compile- and run-time dependencies).

Saving output in log file: hp-check.log

Initializing. Please wait...

---------------
| SYSTEM INFO |
---------------

Basic system information:
Linux kfl62 2.6.25.16-0.1-pae #1 SMP 2008-08-21 00:34:25 +0200 i686 athlon i386 GNU/Linux

Distribution:
suse 11.0

HPOJ running?
No, HPOJ is not running (OK).

Checking Python version...
OK, version 2.5.2 installed

Checking PyQt version...
OK, version 3.17 installed.

Checking SIP version...
OK, Version 4.7.7 installed

Checking for CUPS...
Status: scheduler is running
Version: 1.3.7
error_log is set to level: info
note: For troubleshooting printing issues, it is best to have the CUPS 'LogLevel'
note: set to 'debug'. To set the LogLevel to debug, edit the file /etc/cups/cupsd.conf (as root),
note: and change the line near the top of the file that begins with 'LogLevel' to read:
note: LogLevel debug
note: Save the file and then restart CUPS (see your OS/distro docs on how to restart CUPS).
note: Now, when you print, helpful debug information will be saved to the file:
note: /var/log/cups/error_log
note: You can monitor this file by running this command in a console/shell:
note: tail -f /var/log/cups/error_log

Checking for dbus/python-dbus...
dbus daemon is running.
python-dbus version: 0.82.4

------------------------------------
| COMPILE AND RUNTIME DEPENDENCIES |
------------------------------------

note: To check for compile-time only dependencies, re-run hp-check with the -c parameter (ie, hp-check -c).
note: To check for run-time only dependencies, re-run hp-check with the -r parameter (ie, hp-check -r).

Checking for dependency: cups - Common Unix Printing System...
OK, found.

Checking for dependency: cups-ddk - CUPS driver development kit...
OK, found.

Checking for dependency: cups-devel- Common Unix Printing System development files...
OK, found.

Checking for dependency: dbus - Message bus system...
OK, found.

Checking for dependency: gcc - GNU Project C and C++ Compiler...
OK, found.

Checking for dependency: GhostScript - PostScript and PDF language interpreter and previewer...
OK, found.

Checking for dependency: libcrypto - OpenSSL cryptographic library...
OK, found.

Checking for dependency: libjpeg - JPEG library...
OK, found.

Checking for dependency: libnetsnmp-devel - SNMP networking library development files...
OK, found.

Checking for dependency: libpthread - POSIX threads library...
OK, found.

Checking for dependency: libtool - Library building support services...
OK, found.

Checking for dependency: libusb - USB library...
OK, found.

Checking for dependency: make - GNU make utility to maintain groups of programs...
OK, found.

Checking for dependency: PIL - Python Imaging Library (required for commandline scanning with hp-scan)...
OK, found.

Checking for dependency: ppdev - Parallel port support kernel module....
OK, found.

Checking for dependency: PyQt 3- Qt interface for Python (for Qt version 3.x)...
OK, found.

Checking for dependency: PyQt 4- Qt interface for Python (for Qt version 4.x)...
OK, found.

Checking for dependency: python-ctypes - A foreign function library for Python...
OK, found.

Checking for dependency: python-dbus - Python bindings for dbus...
OK, found.

Checking for dependency: python-devel - Python development files...
OK, found.

Checking for dependency: Python 2.3 or greater - Required for fax functionality...
OK, found.

Checking for dependency: Python 2.2 or greater - Python programming language...
OK, found.

Checking for dependency: Reportlab - PDF library for Python...
warning: NOT FOUND! This is an OPTIONAL/RUNTIME ONLY dependency. Some HPLIP functionality may not function properly.

Checking for dependency: SANE - Scanning library...
OK, found.

Checking for dependency: SANE - Scanning library development files...
OK, found.

Checking for dependency: scanimage - Shell scanning program...
OK, found.

Checking for dependency: xsane - Graphical scanner frontend for SANE...
OK, found.

----------------------
| HPLIP INSTALLATION |
----------------------

Currently installed HPLIP version...
HPLIP 2.8.9 currently installed in '/usr/share/hplip'.

Current contents of '/etc/hp/hplip.conf' file:
[dirs]
run = /var/run
cupsbackend = /usr/lib/cups/backend
ppd = /usr/share/cups/model/HP
doc = /usr/share/doc/hplip-2.8.9
drv = /usr/share/cups/drv/hp/
ppdbase = /usr/share/cups/model
home = /usr/share/hplip
cupsfilter = /usr/lib/cups/filter
icon = /usr/share/applications

[hplip]
version = 2.8.9
plugin = 1

[configure]
foomatic-rip-hplip-install = yes
foomatic-ppd-install = no
doc-build = yes
cups11-build = no
gui-build = yes
internal-tag = 2.8.9.0
foomatic-drv-install = yes
pp-build = no
ui-toolkit = qt3
scanner-build = yes
network-build = yes
restricted-build = no
dbus-build = yes
shadow-build = no
fax-build = yes

--------------------------
| DISCOVERED USB DEVICES |
--------------------------

No devices found.

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------

warning: No queues found.

----------------------
| SANE CONFIGURATION |
----------------------

'hpaio' in '/etc/sane.d/dll.conf'...
OK, found. SANE backend 'hpaio' is properly set up.

Checking output of 'scanimage -L'...
[sanei_debug] Setting debug level of dll to 128.
[dll] sane_init: SANE dll backend version 1.0.12 from sane-backends 1.0.19
[dll] sane_init: reading dll.conf
[dll] add_backend: adding backend `hpaio'
[dll] sane_get_devices
[dll] load: searching backend `hpaio' in `/usr/lib/sane'
[dll] load: trying to load `/usr/lib/sane/libsane-hpaio.so.1'
[dll] load: dlopen()ing `/usr/lib/sane/libsane-hpaio.so.1'
[dll] init: initializing backend `hpaio'
[dll] init: backend `hpaio' is version 1.0.0
[dll] sane_get_devices: found 1 devices
device `hpaio:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50' is a Hewlett-Packard HP_LaserJet_M1120n_MFP all-in-one
[dll] sane_exit: exiting
[dll] sane_exit: calling backend `hpaio's exit function
[dll] sane_exit: finished

---------------------
| PYTHON EXTENSIONS |
---------------------

Checking 'cupsext' CUPS extension...
OK, found.

Checking 'pcardext' Photocard extension...
OK, found.

Checking 'hpmudext' I/O extension...
OK, found.

Checking 'scanext' SANE scanning extension...
OK, found.

-----------------
| USB I/O SETUP |
-----------------

Checking for permissions of USB attached printers...

-----------
| SUMMARY |
-----------

error: 1 error or warning.

Please refer to the installation instructions at:
http://hplip.sourceforge.net/install/index.html

Done.

kfl62@kfl62:~> scanimage -L
[sanei_debug] Setting debug level of dll to 128.
[dll] sane_init: SANE dll backend version 1.0.12 from sane-backends 1.0.19
[dll] sane_init: reading dll.conf
[dll] add_backend: adding backend `hpaio'
[dll] sane_get_devices
[dll] load: searching backend `hpaio' in `/usr/lib/sane'
[dll] load: trying to load `/usr/lib/sane/libsane-hpaio.so.1'
[dll] load: dlopen()ing `/usr/lib/sane/libsane-hpaio.so.1'
[dll] init: initializing backend `hpaio'
[dll] init: backend `hpaio' is version 1.0.0
[dll] sane_get_devices: found 1 devices
device `hpaio:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50' is a Hewlett-Packard HP_LaserJet_M1120n_MFP all-in-one
[dll] sane_exit: exiting
[dll] sane_exit: calling backend `hpaio's exit function
[dll] sane_exit: finished

kfl62@kfl62:~> scanimage
[sanei_debug] Setting debug level of dll to 128.
[dll] sane_init: SANE dll backend version 1.0.12 from sane-backends 1.0.19
[dll] sane_init: reading dll.conf
[dll] add_backend: adding backend `hpaio'
[dll] sane_get_devices
[dll] load: searching backend `hpaio' in `/usr/lib/sane'
[dll] load: trying to load `/usr/lib/sane/libsane-hpaio.so.1'
[dll] load: dlopen()ing `/usr/lib/sane/libsane-hpaio.so.1'
[dll] init: initializing backend `hpaio'
[dll] init: backend `hpaio' is version 1.0.0
[dll] sane_get_devices: found 1 devices
[dll] sane_open: trying to open `hpaio:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50'
scanimage: open of device hpaio:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50 failed: Device busy
[dll] sane_exit: exiting
[dll] sane_exit: calling backend `hpaio's exit function
[dll] sane_exit: finished

tail -f /var/log/messages (relevant lines)

Oct 16 11:24:32 kfl62 scanimage: io/hpmud/jd.c 451: unsupported service 21 hp:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50
Oct 16 11:24:32 kfl62 scanimage: scan/sane/marvell.c 398: unable to open HP-MARVELL-SCAN channel hp:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50

??? don't know why i got "open of device hpaio:/net/HP_LaserJet_M1120n_MFP?ip=10.10.10.50 failed: Device busy" Error message everywhere in GUI, command line ....