Sequence of events;

Printer was working.
Installed update.
Printer not longer worked.
hplip-cups was not installed, installed it.  Might be red herring.
Printer still did not work.
Installed the printer again and it now works OK.
Please note that this is not a USB printer, it is a network printer.

Installed hplip as per request;

and...@shuttle:~$ sudo apt-get install hplip
[sudo] password for andrew:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  xpdf-common
Use 'apt-get autoremove' to remove them.
Suggested packages:
  kdeprint gtklp xpp hplip-gui hplip-doc
The following NEW packages will be installed:
  hplip
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 201kB of archives.
After this operation, 754kB of additional disk space will be used.
Get:1 http://au.archive.ubuntu.com/ubuntu/ lucid-updates/main hplip
3.10.2-2ubuntu2.1 [201kB]
Fetched 201kB in 6s (30.4kB/s)
Selecting previously deselected package hplip.
(Reading database ... 208903 files and directories currently installed.)
Unpacking hplip (from .../hplip_3.10.2-2ubuntu2.1_i386.deb) ...
Processing triggers for man-db ...
Setting up hplip (3.10.2-2ubuntu2.1) ...
Creating/updating hplip user account...

Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
and...@shuttle:~$










On 20 September 2010 21:37, Till Kamppeter <[email protected]> wrote:
> Colin, CUPS does not require HPLIP to work. If hplip is installed, new
> print queues are even automatically created with the "usb" backend of
> CUPS. The problem here is that the user created a print queue to which
> the HPLIP backend got assigned. Then he did an update and this
> uninstalled hplip, leaving the queue in a non-working state.
>
> Andrew Laughton, your hplip package was indeed removed from your system
> during the update. Please re-install it with
>
> sudo apt-get install hplip
>
> Please report here when there occur problems while reinstalling the
> package.
>
> --
> Backend /usr/lib/cups/backend/hp does not exist!
> https://bugs.launchpad.net/bugs/636887
> You received this bug notification because you are a direct subscriber
> of the bug.
>

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Backend /usr/lib/cups/backend/hp does not exist!
https://bugs.launchpad.net/bugs/636887
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