print screen fails printing custom

branch-server 1833
branch-addons official 2351
branch-addons chricar_5.0_price_unit 2445

Environment Information :
System : Linux-2.6.25.20-0.4-default-x86_64-with-SuSE-11.0-X86-64
OS Name : posix
LSB Version: core-2.0-noarch:core-3.0-noarch:core-2.0-x86_64:core-3.0-x86_64:desktop-3.1-amd64:desktop-3.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch
Distributor ID: SUSE LINUX
Description: openSUSE 11.0 (X86-64)
Release: 11.0
Codename: n/a
Operating System Release : 2.6.25.20-0.4-default
Operating System Version : #1 SMP 2009-06-01 09:57:12 +0200
Operating System Architecture : 64bit
Operating System Locale : de_DE.ISO8859-1
Python Version : 2.5.2
OpenERP-Client Version : 5.0.3-bzr
Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
  File "/home/terp/OpenERP/branch/server/5.0/bin/service/web_services.py", line 687, in go
    (result, format) = obj.create(cr, uid, ids, datas, context)
  File "/home/terp/OpenERP/branch/server/5.0/bin/report/printscreen/ps_list.py", line 74, in create
    fields_order = self._parse_string(result['arch'])
  File "/home/terp/OpenERP/branch/server/5.0/bin/report/printscreen/ps_list.py", line 54, in _parse_string
    dom = etree.XML(unicode(view, 'utf-8').encode('utf-8'))
TypeError: decoding Unicode is not supported