My server crashed just now and failed to start up with the PlayerArgsEnd error.
I neither wanted to delete all the player profiles nor look through evey one of them, so I learned bash script and wrote this one to help me check them automatically.
Put it into your /worlds/(worldname)/players folder and execute it.Don't change its filename!
When you found the corrupted file,either delete it or fix it manually.
https://gist.github.com/arsdragonfly/5772568