So just the other day (in my timezone) I came up with a problem when I tried to edit some of the classes in mob arena and I don't know what's wrong. Given I tried to get rid of the rewards just so my inventory didn't get all clogged up I tried to delete the reward section. I have no idea what to do here. Here is the pastebin to the mob arena safe file. http://pastebin.com/Bc2sSNe7 Could someone please edit this so I don't get an error and tell me what happened?