It can happen with any base. Bug is hard to fix, but easy to explain. Its like if your server laggs a lot, or is just glitched somehow. If player is trying to log in, all he sees is black screen. If that happens, server saves his character without skills and stuff. like after that happens, player file will look like:
file: justah.txt
etc.. it just keeps them blank., or saves al as "NULL"Code:username: password: playerrights:]