Implement all abstract methods.

Essentials/src/com/earth2me/essentials/user/User.java

@@ -36,6 +36,16 @@ public class User extends UserBase implements IUser
 		user.acquireWriteLock();
 		user.getData().setMoney(10 + money);
 	}
+	
+	@Override
+	public void finishRead()
+	{
+	}
+
+	@Override
+	public void finishWrite()
+	{
+	}
 
 	@Override
 	public long getLastTeleportTimestamp()

EssentialsSpawn/src/com/earth2me/essentials/spawn/SpawnStorage.java

@@ -25,6 +25,16 @@ public class SpawnStorage extends AsyncStorageObjectHolder<Spawns> implements IE
 	{
 		return new File(ess.getDataFolder(), "spawn.yml");
 	}
+	
+	@Override
+	public void finishRead()
+	{
+	}
+	
+	@Override
+	public void finishWrite()
+	{
+	}
 
 	public void setSpawn(final Location loc, final String group)
 	{