src/de/steamwar/misslewars/MWTeam.java

@@ -97,4 +97,5 @@ public class MWTeam {
 	public String getColoredName() {
 		return color.toString() + teamName;
 	}
+
 }

src/de/steamwar/misslewars/listener/ArenaListener.java

@@ -8,6 +8,8 @@ import org.bukkit.Location;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.entity.FoodLevelChangeEvent;
+import org.bukkit.event.inventory.InventoryOpenEvent;
+import org.bukkit.event.inventory.InventoryType;
 import org.bukkit.event.player.PlayerDropItemEvent;
 import org.bukkit.event.player.PlayerMoveEvent;
 import org.bukkit.event.player.PlayerPickupArrowEvent;
@@ -57,4 +59,12 @@ public class ArenaListener extends BasicListener {
 	public void onHunger(FoodLevelChangeEvent e){
 		e.setCancelled(true);
 	}
+
+	@EventHandler(ignoreCancelled = true)
+	public void onInventoryOpen(InventoryOpenEvent event) {
+		if(event.getView().getType() != InventoryType.PLAYER &&
+				event.getView().getType() != InventoryType.CRAFTING &&
+				event.getView().getType() != InventoryType.CREATIVE)
+				event.setCancelled(true);
+	}
 }