Thank you all for your feedbacks! I was told yesterday that there was a database connection problem in Running Tracker 2.2.0. Here is the fix!
For your information, a new feature is available since Running Tracker 2.2.0. You can now mark workouts as “competition”. These workouts will be bold in the list of workouts:
If you feel that Running Tracker is a nice software for your Nike+ device, please consider making a small donation to the project. The donation doesn’t need to be big, any amount is very welcome. Please remember that the donations (even the small ones) are a way of telling me that you enjoy using the software and that you’d like to see other updates released in the future.
Download Running Tracker 2.2.1 it here: http://runningtracker.tuxfamily.org/index.php?title=Download