KeyError: 'sprints' when trying to add a sprint

[sephii]

On a freshly installed 1.0.0, when trying to add a new sprint:

(lst)sylvain@midgar ~ lst add-sprint
Reading config
Give me a nickname for your sprint (no special chars): vca8
Give me the number of commited man days for this sprint: 30
Give me the sprint start date (as 2013.02.25): 2013.04.03
Give me the sprint end date (as 2013.02.25): 2013.04.18
Give me the zebra project id (if you use Taxi, just do `taxi search client_name` else check in Zebra. It should be a four digit integer): 1590
Give me the jira id of any story in your sprint (something like 'jlc-110'): vca-178
Traceback (most recent call last):
  File "/home/sylvain/.virtualenvs/lst/bin/lst", line 4, in <module>
    lst.Lst()
  File "/home/sylvain/.virtualenvs/lst/local/lib/python2.7/site-packages/lst/__init__.py", line 67, in __init__
    action.run(args)
  File "/home/sylvain/.virtualenvs/lst/local/lib/python2.7/site-packages/lst/commands.py", line 72, in run
    AppContainer.config.create_sprint(name, sprint)
  File "/home/sylvain/.virtualenvs/lst/local/lib/python2.7/site-packages/lst/parser.py", line 59, in create_sprint
    self.data['sprints'][name] = sprint
KeyError: 'sprints'

[sitron]

Do you have anything in your .lst.yml file (in your home)? can you please empty it and retry? thanks

[sephii]

It worked thanks. I guess I had a .lst.yml file from a previous version of lst.