Submitter: rbg4377 ,, hotmail ,, com
Long desciption: Describe as exactly as you can what you did when this error occurred. If you give no description at all, you make it very difficult to track down this bug. You should replace this text with your description, and also remove the "bug-tag" in the bottom of this text so that this bug is not automatically sorted among the bug reports with no description. (bug-tag: NO_DESCRIPTION)

Solfege version	3.19.6
Bzr revision info	branch_nick: build-branch revno: 1851 revision_id: tca@gnu.org-20110405204034-lpfum2jn7xts9phl clean: False
gtk.pygtk_version	(2, 24, 0)
gtk	<module 'gtk' from '/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.pyc'>
sys.version_info	sys.version_info(major=2, minor=7, micro=2, releaselevel='final', serial=0)
sys.version	2.7.2+ (default, Oct 4 2011, 20:03:08) [GCC 4.6.1]
sys.prefix	/usr
sys.platform	linux2
windowsversion	(not running ms windows)

Message from stderr:

Traceback (most recent call last):
  File "/usr/share/solfege/solfege/esel.py", line 276, in on_link_clicked
    solfege.app.practise_lessonfile(filename)
  File "/usr/share/solfege/solfege/application.py", line 359, in practise_lessonfile
    solfege.win.box_dict[module].on_start_practise()
  File "/usr/share/solfege/solfege/exercises/singinterval.py", line 171, in on_start_practise
    super(Gui, self).on_start_practise()
  File "/usr/share/solfege/solfege/abstract.py", line 547, in on_start_practise
    if getattr(self, 'g_flashbar'):
AttributeError: 'Gui' object has no attribute 'g_flashbar'
Traceback (most recent call last):
  File "/usr/share/solfege/solfege/exercises/singinterval.py", line 203, in new_question
    self.m_t.guessed_correct()
  File "/usr/share/solfege/solfege/exercises/singinterval.py", line 67, in guessed_correct
    self.m_statistics.add_correct(self.m_question[0])
  File "/usr/share/solfege/solfege/statistics.py", line 662, in add_correct
    self._add(answer, answer)
  File "/usr/share/solfege/solfege/statistics.py", line 620, in _add
    assert self.m_timestamp
AssertionError
Traceback (most recent call last):
  File "/usr/share/solfege/solfege/exercises/singinterval.py", line 203, in new_question
    self.m_t.guessed_correct()
  File "/usr/share/solfege/solfege/exercises/singinterval.py", line 67, in guessed_correct
    self.m_statistics.add_correct(self.m_question[0])
  File "/usr/share/solfege/solfege/statistics.py", line 662, in add_correct
    self._add(answer, answer)
  File "/usr/share/solfege/solfege/statistics.py", line 620, in _add
    assert self.m_timestamp
AssertionError