Kivy Designer error

[suyog44]

Environment Info

Pip is not installed

Traceback

Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/kivy/core/window/window_pygame.py", line 403, in mainloop
self._mainloop()
File "/usr/local/lib/python2.7/dist-packages/kivy/core/window/window_pygame.py", line 370, in _mainloop
self.modifiers):
File "kivy/_event.pyx", line 714, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7654)
File "kivy/_event.pyx", line 1224, in kivy._event.EventObservers.dispatch (kivy/_event.c:13497)
File "kivy/_event.pyx", line 1148, in kivy._event.EventObservers._dispatch (kivy/_event.c:13023)
File "/usr/local/lib/python2.7/dist-packages/kivy/core/window/init.py", line 159, in _on_window_key_down
return self.dispatch('on_key_down', keycode, text, modifiers)
File "kivy/_event.pyx", line 714, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:7654)
File "kivy/_event.pyx", line 1224, in kivy._event.EventObservers.dispatch (kivy/_event.c:13497)
File "kivy/_event.pyx", line 1148, in kivy._event.EventObservers._dispatch (kivy/_event.c:13023)
File "/home/briskers/gitprojects/kivy-design/designer/playground.py", line 1065, in _on_keyboard_down
self.do_undo()
File "/home/briskers/gitprojects/kivy-design/designer/playground.py", line 1076, in do_undo
self.undo_manager.do_undo()
File "/home/briskers/gitprojects/kivy-design/designer/undo_manager.py", line 153, in do_undo
operation.do_undo()
File "/home/briskers/gitprojects/kivy-design/designer/undo_manager.py", line 80, in do_undo
from_undo=True)
File "/home/briskers/gitprojects/kivy-design/designer/playground.py", line 729, in drag_wigdet
target.add_widget(widget, self.drag_operation[2])
IndexError: list index out of range

End of Traceback