Hi, I have decided to create private server. I have installed server version 1.7.9 (This server is running CraftBukkit version git-Bukkit-1.7.9-R0.2-10-ge6cd8c0-b3096jnks (MC: 1.7.9) (Implementing API version 1.7.9-R0.3-SNAPSHOT)). I have installed this plugins: NoCheatPlus v3.11.0-RC-sMD5NET-b739 GriefPrevention v7.7 Essentials v2.13.1 ChestShop v3.7.17 Vault v1.4.1-b436 It is private server so I stop server for night. But today after starting server all (3 players) lost their inventory and content in ender chest. And got some other items. After investigation I found that messages in console changed. Yesterday it was: And today it is: And here are one more line it wasn't yesterday So I checked in /world/playerdata/ and found 6 files. Files start with id or uuid. Yesterday files start with yesterday id, and today files start with today uuid. So I guess id off all 3 players changed and can't find yesterday player data so it created new data files for all players. But I do not know why and is it possible to return it?