HP 3520 printer network problem

Hi,
    I'm trying to get my HP 3520 deskjet all in one wireless printer connected to my network so I can print wirelessly but I get a "communication error code 12". I download and installed the"HPLIP-Version: HPLIP 3.12.9" from the web site which should be the correct version for my printer and Ubuntu 12.04.
I'm using Ubuntu 12.04 and I will paste the hp-check results below. Any help would be greatly appreciated.
Julian

winston@winston-laptop:~$ hp-check

HP Linux Imaging and Printing System (ver. 3.12.9)
Dependency/Version Check Utility ver. 15

Copyright (c) 2001-14 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).

Check types:
a. EXTERNALDEP - External Dependencies
b. GENERALDEP - General Dependencies (required both at compile and run time)
c. COMPILEDEP - Compile time Dependencies
d. [All are run-time checks]
PYEXT SCANCONF QUEUES PERMISSION

Status Types:
    OK
    MISSING - Missing Dependency or Permission or Plug-in
    INCOMPAT - Incompatible dependency-version or Plugin-version

Saving output in log file: /home/winston/hp-check.log

Initializing. Please wait...

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

 Kernel: 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:17:36 UTC 2012 GNU/Linux
 Host: winston-laptop
 Proc: 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:17:36 UTC 2012 GNU/Linux
 Distribution: ubuntu 12.04

-----------------------
| HPLIP CONFIGURATION |
-----------------------

HPLIP-Version: HPLIP 3.12.9
HPLIP-Home: /usr/share/hplip
HPLIP-Installation: Auto installation is supported for ubuntu distro 12.04 version

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.12.9

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/HP
ppdbase=/usr/share/ppd
doc=/usr/share/doc/hplip-3.12.9
icon=/usr/share/applications
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv/hp

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
libusb01-build=no
pp-build=no
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=no
foomatic-drv-install=no
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.12.9
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=no
hpijs-only-build=no
lite-build=no
udev-acl-rules=yes
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no

Current contents of '/var/lib/hp/hplip.state' file:
Plugins are not installed. Could not access file: No such file or directory

Current contents of '~/.hplip/hplip.conf' file:
[upgrade]
notify_upgrade = true
last_upgraded_time = 1348535026
pending_upgrade_time = 0
latest_available_version = 3.12.9

[settings]
systray_visible = 0
systray_messages = 0

[last_used]
device_uri = "hp:/usb/Deskjet_3520_series?serial=CN25L1G0M405SY"
printer_name =
working_dir = .

[commands]
scan = /usr/bin/xsane -V %SANE_URI%

[refresh]
rate = 30
enable = false
type = 1

[polling]
enable = false
interval = 5
device_list =

[fax]
voice_phone =
email_address =

[installation]
date_time = 25/09/12 11:32:30
version = 3.12.9

 <Package-name> <Package-Desc> <Required/Optional> <Min-Version> <Installed-Version> <Status> <Comment>

--------------------------
| External Dependencies |
--------------------------

 gs Ghostscript REQUIRED 7.05 9.05 OK -
 network Network-wget OPTIONAL - 1.13.4 OK -
 dbus DBus REQUIRED - 1.4.18 OK -
 scanimage Shell-Scanning OPTIONAL 1.0 1.0.22 OK -
 policykit Admin-Policy-framework OPTIONAL - 0.104 OK -
 xsane SANE-GUI OPTIONAL 0.9 0.998 OK -
 cups CUPS REQUIRED 1.1 1.5.3 OK 'CUPS Scheduler is running'

-------------------------
| General Dependencies |
-------------------------

 reportlab Python-PDF-Lib OPTIONAL 2.0 2.5 OK -
 libcrypto OpenSSL-Crypto-Lib REQUIRED - 1.0.1 OK -
 pil Python-Image-Lib OPTIONAL - 1.1.7 OK -
 pyqt4-dbus PyQt4-DBUS REQUIRED 4.0 4.9.1 OK -
 libjpeg JPEG-Lib REQUIRED - - OK -
 libpthread POSIX-Threads-Lib REQUIRED - 2.15 OK -
 python-dbus Python-DBUS REQUIRED 0.80.0 1.0.0 OK -
 python-devel Python-SDK REQUIRED 2.2 2.7.3 OK -
 pyqt4 Python-Qt4 REQUIRED 4.0 4.9.1 OK -
 cups-devel CUPS-SDK REQUIRED - 1.5.3 OK -
 sane-devel SANE-SDK REQUIRED - 1.0.22 OK -
 libusb USB-Lib REQUIRED - 1.0 OK -
 sane Scan-Lib REQUIRED - 1.0.22 OK -
 cups-image CUPS-Image-Lib REQUIRED - 1.5.3 OK -
 libnetsnmp-devel SNMP-Networking-SDK REQUIRED 5.0.9 5.4.3 OK -
 python-xml Python-XML-Lib REQUIRED - 2.0.1 OK -
 python-notify Desktop-notifications OPTIONAL - - OK -

------------------------------
| Compile Time Dependencies |
------------------------------

 gcc gcc-Compiler REQUIRED - 4.6.3 OK -
 libtool Build-tools REQUIRED - 2.4.2 OK -
 make GNU-Build-tools REQUIRED 3.0 3.81 OK -

----------------------
| Python Extentions |
----------------------

 cupsext CUPS-Extension REQUIRED - 3.12.9 OK -
 pcardext PhotoCard-Extension REQUIRED - 3.12.9 OK -
 hpmudext IO-Extension REQUIRED - 3.12.9 OK -

-----------------------
| Scan Configuration |
-----------------------

 hpaio HPLIP-SANE-Backend REQUIRED - 3.12.9 OK 'hpaio found in /etc/sane.d/dll.conf'
 scanext Scan-SANE-Extension REQUIRED - 3.12.9 OK -

------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------

No Scanner found.

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

No devices found.

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

Deskjet_3520
------------
Type: Printer
Device URI: hp:/usb/Deskjet_3520_series?serial=CN25L1G0M405SY
PPD: /etc/cups/ppd/Deskjet_3520.ppd
PPD Description: HP Deskjet 3520 Series, hpcups 3.12.9
Printer status: printer Deskjet_3520 disabled since Tue 25 Sep 2012 11:11:03 EST - Unplugged or turned off
error: Unable to communicate with device (code=12): hp:/usb/Deskjet_3520_series?serial=CN25L1G0M405SY
error: Device not found
error: Communication status: Failed

--------------
| PERMISSION |
--------------

groups user-groups Required - - OK winston adm lp dialout cdrom plugdev lpadmin admin sambashare

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

Missing Required Dependencies
-----------------------------
None

Missing Optional Dependencies
-----------------------------
None

Total Errors: 1
Total Warnings: 0

Done.