Crash when sinchronize with Google ubuntu 14.04 lts

[Massimo]

Hello!

I have Ubuntu 14.04 LTS and Google-task-indicator 0.5.2-0.extras14.04.0
with desktop Unity

After Login and setting in sync option:
task local only: Copy to external
task external only : do none
task local and external: copy to external

then I try sinchronize with Google and crashing with an error:

Title:
google-task-indicator crashed with UnboundLocalError in sync(): local variable 'due' referenced before assignment

Traceback:
Traceback (most recent call list):
File "/usr/share/google-tasks-indicator/googletasksindicator.py", line 220, in sync
new_task = gta.create_task( tasklist_id = task['tasklist_id'], title = task['title'], notes=task['notes'], iscompleted=task.get_completed(),due,data_completed=task['completed'])
UnboundLocalError: local variable 'due' referenced before assignment

[Massimo (7-infx-1)]

Hello!

if i change the setting in sync option:
task local only: Delete local
task external only : copy to local
task local and external: copy to local

error is:

google-tasks-indicator crashed with OSError in __main__: [Errno 5] Error in input/output

Traceback:
File "/usr/bin/google-task-indicator", line 40, in <module>
print('Google-Task-Indicator version: %s'%comun.VERSION)
OSError: [Errno 5] Error in input/output

Thank you,
bye!