Bukkit

What steps will reproduce the problem?
1. Start the Server
2. Create A Temple Run Course
3. Stop The Server, an exception is generated in console
4. The next time the server is started, temple run won't start the game; it say "you are already in a parkour"
5. After trying to join a temple run course, countless exceptions are generated in console.

What is the expected output? What do you see instead?
Parkour should allow me to join, it says "you are already in a parkour"

It works the first time but not after you've stopped the server once and started it again later.

What version of the product are you using?
v1.1 (Sep. 9th, 2013)

Do you have an error log of what happened?
I do not, it is very easy to reproduce however.

Please provide any additional information below.