After a lot of research and testing, I re-wrote a big part of Running Tracker. I’m glad to let you know that the Nike+ synchronization problem has been fixed!! Running Tracker is now compatible with the new Nike+ version. You can synchronize your workouts just like before!
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 it here: http://runningtracker.tuxfamily.org/index.php?title=Download
[Update] Running Tracker is now working with the new Nike+ version! See the new post: http://runningtracker.tuxfamily.org/blog/2012/07/18/running-tracker-2-2-1/