Hello! I have the problem that in one world all users without op rights can't craft some recipes like iron sword and iron shovel but others work like iron hoe and wood to planks. I have this problem now for about 2 weeks. There is no error in console the item just appears for a second and then disappears. The strange thing is this error only occurs sometimes. Linux meincraft.eu 2.6.32-5-amd64 #1 SMP Mon Feb 25 00:26:11 UTC 2013 x86_64 GNU/Linux java version "1.7.0_09" Java(TM) SE Runtime Environment (build 1.7.0_09-b05) Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02, mixed mode) I don't use any wrappers. 1.5.2-R0.1. Server log is over 100MB and there are no errors in it. server.properties. Start parameters Code: java -Xms2048M -Xmx14000M -XX:+UseG1GC -XX:+AggressiveOpts -XX:+UseFastAccessorMethods -XX:+UseLargePages -XX:TargetSurvivorRatio=90 -XX:MaxGCPauseMillis=200 -XX:MaxPermSize=256m craftbukkit.jar I don't get any Errors. I tried to disable some plugins that i recently have added or updated. I have already updated all my plugins.