diff --git a/PocketMine-MP.php b/PocketMine-MP.php
index 28a97e93a..b2521b2a6 100644
--- a/PocketMine-MP.php
+++ b/PocketMine-MP.php
@@ -19,10 +19,9 @@
  *
 */
 
+
 /***REM_START***/
 require_once(dirname(__FILE__)."/src/config.php");
-
-//Language Support
 require_once(FILE_PATH . "/src/language/en_us.php");
 
 require_once(FILE_PATH."/src/functions.php");
@@ -33,4 +32,4 @@ $server = new ServerAPI();
 $server->start();
 
 kill(getmypid()); //Fix for ConsoleAPI being blocked
-exit(0);
\ No newline at end of file
+exit(0);
diff --git a/src/API/BanAPI.php b/src/API/BanAPI.php
index 290c54833..88874fafb 100644
--- a/src/API/BanAPI.php
+++ b/src/API/BanAPI.php
@@ -35,13 +35,13 @@ class BanAPI{
 		$this->bannedIPs = new Config(DATA_PATH."banned-ips.txt", CONFIG_LIST);//Open Banned IPs list file
 		$this->banned = new Config(DATA_PATH."banned.txt", CONFIG_LIST);//Open Banned Usernames list file
 		$this->ops = new Config(DATA_PATH."ops.txt", CONFIG_LIST);//Open list of OPs
-		$this->server->api->console->register("banip", CMD_BANIP_DESC, array($this, "commandHandler"));
-		$this->server->api->console->register("ban", CMD_BAN_DESC, array($this, "commandHandler"));
-		$this->server->api->console->register("kick", CMD_KICK_DESC, array($this, "commandHandler"));
-		$this->server->api->console->register("whitelist", CMD_WHITELIST_DESC, array($this, "commandHandler"));
-		$this->server->api->console->register("op", CMD_OP_DESC, array($this, "commandHandler"));
-		$this->server->api->console->register("deop", CMD_DEOP_DESC, array($this, "commandHandler"));
-		$this->server->api->console->register("sudo", CMD_SUDO_DESC, array($this, "commandHandler"));
+		$this->server->api->console->register("banip", "<add|remove|list|reload> [IP|player]", array($this, "commandHandler"));
+		$this->server->api->console->register("ban", "<add|remove|list|reload> [username]", array($this, "commandHandler"));
+		$this->server->api->console->register("kick", "<player> [reason ...]", array($this, "commandHandler"));
+		$this->server->api->console->register("whitelist", "<on|off|list|add|remove|reload> [username]", array($this, "commandHandler"));
+		$this->server->api->console->register("op", "<player>", array($this, "commandHandler"));
+		$this->server->api->console->register("deop", "<player>", array($this, "commandHandler"));
+		$this->server->api->console->register("sudo", "<player>", array($this, "commandHandler"));
 		$this->server->api->console->alias("ban-ip", "banip add");
 		$this->server->api->console->alias("banlist", "ban list");
 		$this->server->api->console->alias("pardon", "ban remove");
@@ -108,11 +108,11 @@ class BanAPI{
 				$target = strtolower(array_shift($params));
 				$player = $this->server->api->player->get($target);
 				if(!($player instanceof Player)){
-					$output .= API_BAN_PLAYER_NOT_CONNECTED . "\n";
+					$output .= "Player not connected.\n";
 					break;
 				}
 				$this->server->api->console->run(implode(" ", $params), $player);
-				$output .= str_replace( "{player}", $player->username, API_BAN_CMD_RUN_AS ) . ".\n";
+				$output .= "Command ran as ".$player->username.".\n";
 				break;
 			case "op":
 				$user = strtolower($params[0]);
@@ -120,13 +120,13 @@ class BanAPI{
 				if(!($player instanceof Player)){
 					$this->ops->set($user);
 					$this->ops->save($user);
-					$output .= str_replace( "{player}", $user, API_BAN_NOW_OP) . "\n";
+					$output .= $user." is now op\n";
 					break;
 				}
 				$this->ops->set($player->iusername);
 				$this->ops->save();
-				$output .= str_replace( "{player}", $player->iusername, API_BAN_NOW_OP) . "\n";
-				$this->server->api->chat->sendTo(false, API_BAN_YOU_NOW_OP, $player->iusername);
+				$output .= $player->iusername." is now op\n";
+				$this->server->api->chat->sendTo(false, "You are now op.", $player->iusername);
 				break;
 			case "deop":
 				$user = strtolower($params[0]);
diff --git a/src/language/en_us.php b/src/language/en_us.php
deleted file mode 100644
index dbfe5ac66..000000000
--- a/src/language/en_us.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-
-/**
- *
- *  ____            _        _   __  __ _                  __  __ ____  
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \ 
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/ 
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_| 
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- * 
- *
-*/
-
-//Command Language
-const CMD_BANIP_DESC = "<add|remove|list|reload> [IP|player]";
-const CMD_BAN_DESC = "<add|remove|list|reload> [username]";
-const CMD_KICK_DESC = "<player> [reason ...]";
-const CMD_WHITELIST_DESC = "<on|off|list|add|remove|reload> [username]";
-const CMD_OP_DESC = "<player>";
-const CMD_DEOP_DESC = "<player>";
-const CMD_SUDO_DESC = "<player>";
-
-//Ban API Language
-const API_BAN_PLAYER_NOT_CONNECTED = "Player not connected.";
-const API_BAN_CMD_RUN_AS = "Command ran as {player}";
-const API_BAN_NOW_OP = "{player} is now op";
-const API_BAN_YOU_NOW_OP = "you are now op.";
-const API_BAN_NOW_DEOP = "{player} is no longer op";
-
-?>
\ No newline at end of file
diff --git a/src/material/block/liquid/Lava.php b/src/material/block/liquid/Lava.php
index 154f4bcbb..1dfbb7743 100644
--- a/src/material/block/liquid/Lava.php
+++ b/src/material/block/liquid/Lava.php
@@ -101,6 +101,7 @@ class LavaBlock extends LiquidBlock{
 		$down = $this->getSide(0);
 		
 		$from = $this->getFrom();
+		//출처가 있거나 이 자체가 출처이면
 		if($from !== null || $level == 0x00)
 		{
 			if($level !== 0x07)
@@ -130,17 +131,33 @@ class LavaBlock extends LiquidBlock{
 		}
 		else
 		{
-			//Extend Request for Left Lavas
+			//Extend Remove for Left Lavas
 			for($side = 2; $side <= 5; ++$side)
 			{
 				$sb = $this->getSide($side);
+				if($sb instanceof LavaBlock)
+				{
+					$tlevel = $sb->meta & 0x07;
+					if($tlevel != 0x00)
+					{
+						$this->level->setBlock($sb, new AirBlock(), false, false, true);
+					}
+				}
 				$b = $this->getSide(0)->getSide($side);
-				ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($sb, 0, 0, $this->level), 40, BLOCK_UPDATE_NORMAL);
-				ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 40, BLOCK_UPDATE_NORMAL);
+				if($b instanceof LavaBlock)
+				{
+					$tlevel = $b->meta & 0x07;
+					if($tlevel != 0x00)
+					{
+						$this->level->setBlock($b, new AirBlock(), false, false, true);
+					}
+				}
+				//ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 10, BLOCK_UPDATE_NORMAL);
 			}
+			//출처가 제거된 경우 이 블록 제거	
 			$this->level->setBlock($this, new AirBlock(), false, false, true);
 		}
 		return false;
 	}	
 	
-}
\ No newline at end of file
+}
diff --git a/src/material/block/liquid/Water.php b/src/material/block/liquid/Water.php
index 8aa36470c..666e85156 100644
--- a/src/material/block/liquid/Water.php
+++ b/src/material/block/liquid/Water.php
@@ -141,12 +141,27 @@ class WaterBlock extends LiquidBlock{
 			for($side = 2; $side <= 5; ++$side)
 			{
 				$sb = $this->getSide($side);
+				if($sb instanceof WaterBlock)
+				{
+					$tlevel = $sb->meta & 0x07;
+					if($tlevel != 0x00)
+					{
+						$this->level->setBlock($sb, new AirBlock(), false, false, true);
+					}
+				}
 				$b = $this->getSide(0)->getSide($side);
-				ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($sb, 0, 0, $this->level), 10, BLOCK_UPDATE_NORMAL);
-				ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 10, BLOCK_UPDATE_NORMAL);
+				if($b instanceof WaterBlock)
+				{
+					$tlevel = $b->meta & 0x07;
+					if($tlevel != 0x00)
+					{
+						$this->level->setBlock($b, new AirBlock(), false, false, true);
+					}
+				}
+				//ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 10, BLOCK_UPDATE_NORMAL);
 			}
 			$this->level->setBlock($this, new AirBlock(), false, false, true);
 		}
 		return false;
 	}	
-}
\ No newline at end of file
+}
diff --git a/src/pmf/Level.php b/src/pmf/Level.php
index 56f035fcc..49a18bab4 100644
--- a/src/pmf/Level.php
+++ b/src/pmf/Level.php
@@ -475,7 +475,8 @@ class PMFLevel extends PMF{
 				for($side = 0; $side <= 5; ++$side)
 				{
 					$b = $pos->getSide($side);
-					ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 10, BLOCK_UPDATE_NORMAL);
+					if($b instanceof LavaBlock) { ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 40, BLOCK_UPDATE_NORMAL); }
+					else { ServerAPI::request()->api->block->scheduleBlockUpdate(new Position($b, 0, 0, $this->level), 10, BLOCK_UPDATE_NORMAL); }
 				}
 			}
 			return true;
@@ -519,4 +520,4 @@ class PMFLevel extends PMF{
 		}
 	}
 
-}
\ No newline at end of file
+}