I'm hosting a Minecraft server using the dedicated minecraft beta software, and for a while everything was going really well, but today I was doing a few things in the server, I then left, and joined back after like 5 mins, but it wouldn't let me join back, it would say "Locating server" forever and the only way to get out of the screen is to restart my Minecraft, the really weird thing is my friend can still log into the server on his acc, and if I switch my account to my alt, I can join, which means it's a problem with my accound, is there a way to clear the data of an account on a world so it's spawned in as a new player?