ViewSlides-11 does not start

[alsroot]

On several distros w/ 0.88.0, ViewSlides-11 does not start with log

1271195449.236872 DEBUG root: *** Act 80b29b243635c00e4f409f66cd075e0c15958467, mesh instance None, scope private
1271195449.237099 DEBUG root: Creating a jobject.
1271195449.238223 DEBUG root: datastore.write
1271195449.244280 DEBUG root: Written object 300f8a98-c36f-41f4-928d-0051d4d49180 to the datastore.
1271195449.256445 DEBUG root: PaletteWindow.popdown immediate True
1271195449.264289 DEBUG root: PaletteWindow.popdown immediate True
1271195449.267803 WARNING root: No gtk.AccelGroup in the top level window.
1271195449.271449 WARNING root: No gtk.AccelGroup in the top level window.
1271195449.334691 WARNING root: No gtk.AccelGroup in the top level window.
1271195449.334940 WARNING root: No gtk.AccelGroup in the top level window.
1271195449.590563 INFO read-etexts-activity: Hardware manager service not found, no idle suspend.
/usr/lib64/python2.6/site-packages/sugar/graphics/window.py:294: DeprecationWarning: use toolbar_box instead of toolbox
  warnings.warn('use toolbar_box instead of toolbox', DeprecationWarning)
Traceback (most recent call last):
  File "/usr/bin/sugar-activity", line 21, in <module>
    main.main()
  File "/usr/lib64/python2.6/site-packages/sugar/activity/main.py", line 152, in main
    create_activity_instance(activity_constructor, activity_handle)
  File "/usr/lib64/python2.6/site-packages/sugar/activity/main.py", line 37, in create_activity_instance
    activity = constructor(handle)
  File "/home/me/Activities/ViewSlides.activity/viewslides.py", line 355, in __init__
    self.toolbox.set_current_toolbar(_TOOLBAR_SLIDES)
AttributeError: 'ToolbarBox' object has no attribute 'set_current_toolbar'
1271195449.591856 DEBUG root: _cleanup_temp_files
Exited with status 1, pid 32217 data (None, <open file '<fdopen>', mode 'w' at 0x214a9c0>, '80b29b243635c00e4f409f66cd075e0c15958467')

[alsroot]

recent v12 was tested on 0.82-0.88 and it works fine