Place this file in the same directory as the changer script and run
patch -p0 < changer.txt

*** changer	2006-10-26 22:59:52.000000000 +0200
--- changer2	2007-01-15 17:49:05.000000000 +0100
***************
*** 2,5 ****
--- 2,6 ----
  
  from xml.dom import minidom
+ from sys import exit
  import gconf
  import os
***************
*** 9,21 ****
  
  def decodeWP(node):
! 	results = {}
! 	for value in node.childNodes:
! 		if value.nodeType==1:
! 			ndata = ''
! 			for val in value.childNodes:
!                                 if val.nodeType==3: # TEXT_NODE
!                                         ndata = ndata + val.data
! 			results[value.tagName] = ndata
! 	return results;
  
  settings = os.path.expanduser('~') + '/.gnome2/backgrounds.xml'
--- 10,26 ----
  
  def decodeWP(node):
!     if node.hasAttribute( "deleted" ) and node.getAttribute( "deleted" ) == "true":
!         return None
!     results = {}
!     for value in node.childNodes:
!         if value.nodeType==1:
!             ndata = ''
!             for val in value.childNodes:
!                 if val.nodeType==3: # TEXT_NODE
!                     ndata = ndata + val.data
!             results[value.tagName] = ndata
!     if results["name"] == "No Wallpaper":
!          return None
!     return results;
  
  settings = os.path.expanduser('~') + '/.gnome2/backgrounds.xml'
***************
*** 24,33 ****
  wallpapers = [];
  for child in xmldoc.childNodes:
! 	if child.nodeType==1:
! 		if child.tagName=='wallpapers':
! 			for wp in child.childNodes:
! 				if wp.nodeType==1:
! 					if wp.tagName=='wallpaper':
! 						wallpapers.append(decodeWP(wp))
  
  random.seed()
--- 29,42 ----
  wallpapers = [];
  for child in xmldoc.childNodes:
!     if child.nodeType==1:
!         if child.tagName=='wallpapers':
!             for wp in child.childNodes:
!                 if wp.nodeType==1:
!                     if wp.tagName=='wallpaper':
!                         w = decodeWP(wp)
!                         if w:
!                             wallpapers.append(w)
! if wallpapers == []:
!     exit()
  
  random.seed()
***************
*** 38,42 ****
  gs = '/desktop/gnome/background/'
  
! print 'Setting background to: ' + wp['name']
  changeSet.set_string(gs + 'picture_filename',   wp['filename'])
  changeSet.set_string(gs + 'picture_options',    wp['options'])
--- 47,51 ----
  gs = '/desktop/gnome/background/'
  
! #print 'Setting background to: ' + wp['name']
  changeSet.set_string(gs + 'picture_filename',   wp['filename'])
  changeSet.set_string(gs + 'picture_options',    wp['options'])