tasky crashy This is the output/ traceback after trying to "f" change the filter

gistfile1.txt

djp@tigger:~/tmp/Tasky-master$ tasky.py proj:tw

Traceback (most recent call last):
  File "/home/djp/bin/tasky.py", line 155, in <module>
    Tasky()
  File "/home/djp/bin/tasky.py", line 46, in __init__
    loop.run()
  File "/usr/lib/python2.7/dist-packages/urwid/main_loop.py", line 274, in run
    self.screen.run_wrapper(self._run)
  File "/usr/lib/python2.7/dist-packages/urwid/raw_display.py", line 237, in run_wrapper
    return fn()
  File "/usr/lib/python2.7/dist-packages/urwid/main_loop.py", line 307, in _run
    self.event_loop.run()
  File "/usr/lib/python2.7/dist-packages/urwid/main_loop.py", line 682, in run
    self._loop()
  File "/usr/lib/python2.7/dist-packages/urwid/main_loop.py", line 720, in _loop
    self._watch_files[fd]()
  File "/usr/lib/python2.7/dist-packages/urwid/main_loop.py", line 358, in _update
    self.process_input(keys)
  File "/usr/lib/python2.7/dist-packages/urwid/main_loop.py", line 447, in process_input
    k = self._topmost_widget.keypress(self.screen_size, k)
  File "/usr/lib/python2.7/dist-packages/urwid/container.py", line 629, in keypress
    return self.footer.keypress((maxcol,),key)
  File "/home/djp/bin/lineeditor.py", line 10, in keypress
    urwid.emit_signal(self, 'done', self.get_edit_text())
  File "/usr/lib/python2.7/dist-packages/urwid/signals.py", line 126, in emit
    result |= bool(callback(*args_copy))
  File "/home/djp/bin/tasky.py", line 124, in wrapped
    action(self, content)
  File "/home/djp/bin/tasky.py", line 152, in filter_done
    self.refresh()
  File "/home/djp/bin/tasky.py", line 50, in refresh
    self.walker[:] = map(TaskWidget, self.warrior.pending_tasks(filter))
  File "/usr/lib/python2.7/dist-packages/urwid/monitored_list.py", line 29, in call_modified_wrapper
    self._modified()
  File "/usr/lib/python2.7/dist-packages/urwid/listbox.py", line 122, in _modified
    ListWalker._modified(self)
  File "/usr/lib/python2.7/dist-packages/urwid/listbox.py", line 42, in _modified
    signals.emit_signal(self, "modified")
  File "/usr/lib/python2.7/dist-packages/urwid/signals.py", line 126, in emit
    result |= bool(callback(*args_copy))
  File "/home/djp/bin/tasky.py", line 39, in update_header
    self.view.set_header(urwid.AttrMap(urwid.Text(header_text), 'head'))
  File "/usr/lib/python2.7/dist-packages/urwid/widget.py", line 469, in __init__
    self.set_text(markup)
  File "/usr/lib/python2.7/dist-packages/urwid/widget.py", line 511, in set_text
    self._text, self._attrib = decompose_tagmarkup(markup)
  File "/usr/lib/python2.7/dist-packages/urwid/util.py", line 376, in decompose_tagmarkup
    text = tl[0][:0].join(tl)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xce in position 6: ordinal not in range(128)