The walls now reset at the end of every game better and also if there has been a crash the walls will reset on the start up of the server because the arenas are now saved into files.
The arena will take 5 seconds before resetting at the end of the game so that TNT will now go off later not affecting the next round!
If you were in the game and type /walls players then it will send you the players for the teams Red, Blue, Green and Gellow. The has been fixed to say yellow.