When I start ranger with a command like this:

ranger --cmd "cd ~/downoads/1" --cmd "tab_new ~/downloads/2" --cmd "tab_new ~/downloads/3" --cmd "tab_new ~/downloads/4" --cmd "tab_new ~"

it crashes whenever I press 'gg' in order to select a bookmark.

Here is a relevant part of my rc.conf:

# Bookmarks
map gg<any>  enter_bookmark %any
map b<bg>    draw_bookmarks
map b<any>   set_bookmark %any
map ub<any>  unset_bookmark %any
copymap b<bg>  ub<bg> gg<bg>

Here is the trace:

ranger version: 1.6.1, executed with python 2.7.10
Locale: ru_RU.UTF-8
Current file: /home/me/audio
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/ranger/core/main.py", line 133, in main
    fm.loop()
  File "/usr/lib/python2.7/site-packages/ranger/core/fm.py", line 310, in loop
    ui.redraw()
  File "/usr/lib/python2.7/site-packages/ranger/gui/ui.py", line 262, in redraw
    self.draw()
  File "/usr/lib/python2.7/site-packages/ranger/gui/ui.py", line 288, in draw
    DisplayableContainer.draw(self)
  File "/usr/lib/python2.7/site-packages/ranger/gui/displayable.py", line 246, in draw
    displayable.draw()
  File "/usr/lib/python2.7/site-packages/ranger/gui/widgets/browserview.py", line 102, in draw
    self._draw_bookmarks()
  File "/usr/lib/python2.7/site-packages/ranger/gui/widgets/browserview.py", line 204, in _draw_bookmarks
    string = " " + key + "   " + mark.path
AttributeError: 'NoneType' object has no attribute 'path'