HP printer network communication issue

Basically, the printer is connected via Ethernet to a router, which is then connected to the internet and to my computer, a net-book running Ubuntu 11.04. It's a HP Officejet 6500a plus, or Officejet 6500 E710n-z. Its an all in one machine withe a duplexer and document feeder. I tried previously with usb, but i found it easier with ethernet, though I don't mind going back

I have installed hplip and re-installed multiple times, following all the directions and help from different forums.

When i use hp-setup, it will find the printer, but when I attempt to add it, it gives me a network communication error.

I ran hp-check -t and it gave me two communication errors, i'll paste the output at the bottom of this post

I need this printer for college, and so far its been a pain, any help is welcome as I haven't been able to find a solution anywhere.

trevor@trevor-1015PE:~$ sudo hp-check -t

HP Linux Imaging and Printing System (ver. 3.11.7)
Dependency/Version Check Utility ver. 14.3

Copyright (c) 2001-9 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 trevor-1015PE 2.6.38-11-generic #50-Ubuntu SMP Mon Sep 12 21:18:14 UTC 2011 i686 i686 i386 GNU/Linux

Distribution:
ubuntu 11.04

Checking Python version...
OK, version 2.7.1 installed

Checking PyQt 4.x version...
OK, version 4.8.3 installed.

Checking for CUPS...
Status: scheduler is running
Version: 1.4.6
error_log is set to level: warn

Checking for dbus/python-dbus...
dbus daemon is running.
python-dbus version: 0.83.1

------------------------------------
| 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 devel- Common Unix Printing System development files...
OK, found.

Checking for dependency: CUPS image - CUPS image 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: PolicyKit - Administrative policy framework...
OK, found.

Checking for dependency: PyQt 4 DBus - DBus Support for PyQt4...
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 libnotify - Python bindings for the libnotify Desktop notifications...
OK, found.

Checking for dependency: Python XML libraries...
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...
OK, found.

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 3.11.7 currently installed in '/usr/share/hplip'.

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

[hplip]
version=3.11.7

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/HP
ppdbase=/usr/share/ppd
doc=/usr/share/doc/hplip-3.11.7
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
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=3.11.7
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=no
hpijs-only-build=no
lite-build=no
udev-acl-rules=yes
hpcups-only-build=no
hpijs-only-build=no

Current contents of '/var/lib/hp/hplip.state' file:
# hplip.state - HPLIP runtime persistent variables.

[plugin]
installed=0
eula=0

Current contents of '~/.hplip/hplip.conf' file:
[installation]
date_time = 09/21/2011 13:13:14
version = 3.11.7

[settings]
systray_visible = 0
systray_messages = 0

[last_used]
device_uri = "hp:/net/Officejet_6500_E710n-z?zc=HP598AB6"
printer_name = Officejet_6500_E710n-z
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 =

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

No devices found.

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

Officejet_6500_E710n-z
----------------------
Type: Printer
Device URI: hp:/net/Officejet_6500_E710n-z?zc=HP598AB6
PPD: /etc/cups/ppd/Officejet_6500_E710n-z.ppd
PPD Description: HP Officejet 6500 e710n-z, hpcups 3.11.7
Printer status: printer Officejet_6500_E710n-z is idle. enabled since Wed 21 Sep 2011 02:10:07 PM MDT
error: Unable to communicate with device (code=12): hp:/net/Officejet_6500_E710n-z?zc=HP598AB6
error: unable to open channel
error: Communication status: Failed

Officejet_6500_E710n-z_fax
--------------------------
Type: Fax
Device URI: hpfax:/net/Officejet_6500_E710n-z?zc=HP598AB6
PPD: /etc/cups/ppd/Officejet_6500_E710n-z_fax.ppd
PPD Description: HP Fax4 hpcups
Printer status: printer Officejet_6500_E710n-z_fax is idle. enabled since Wed 21 Sep 2011 02:10:07 PM MDT
error: Unable to communicate with device (code=12): hpfax:/net/Officejet_6500_E710n-z?zc=HP598AB6
error: unable to open channel
error: Communication status: Failed

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

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

Checking output of 'scanimage -L'...
device `hpaio:/net/Officejet_6500_E710n-z?zc=HP598AB6' is a Hewlett-Packard Officejet_6500_E710n-z all-in-one

---------------------
| 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.

---------------
| USER GROUPS |
---------------

root

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

error: 2 errors and/or warnings.