since one of the last updates, I can't open my hp-toolbox.
If I reinstall hplip it works one times and then (without a reboot)

~ hp-toolbox

HP Linux Imaging and Printing System (ver. 3.12.4)
HP Device Manager ver. 15.0

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.

Traceback (most recent call last):
File "/usr/bin/hp-toolbox", line 257, in <module>
toolbox = DevMgr5(__version__, device_uri, None)
File "/usr/share/hplip/ui4/devmgr5.py", line 204, in __init__
if not utils.Is_HPLIP_older_version( installed_version, self.user_settings.latest_available_version):
File "/usr/share/hplip/base/utils.py", line 1795, in Is_HPLIP_older_version
if(int(installed_array[cnt]) < int(available_array[cnt])):
ValueError: invalid literal for int() with base 10: "10 Public Release</a><br />')"

OS is

Linux home 3.4.6-2.10-desktop #1 SMP PREEMPT Thu Jul 26 09:36:26 UTC 2012 (641c197) x86_64 x86_64 x86_64 GNU/Linux