diff --git a/composer.lock b/composer.lock
index 070d740e0..25003db99 100644
--- a/composer.lock
+++ b/composer.lock
@@ -48,16 +48,16 @@
         },
         {
             "name": "pocketmine/binaryutils",
-            "version": "0.1.1",
+            "version": "0.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/BinaryUtils.git",
-                "reference": "54efeb978be0ff9335022729fe63c1e2077bf1be"
+                "reference": "2c1628f08a9cdeca4d3c682e13f24420944ca845"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/BinaryUtils/zipball/54efeb978be0ff9335022729fe63c1e2077bf1be",
-                "reference": "54efeb978be0ff9335022729fe63c1e2077bf1be",
+                "url": "https://api.github.com/repos/pmmp/BinaryUtils/zipball/2c1628f08a9cdeca4d3c682e13f24420944ca845",
+                "reference": "2c1628f08a9cdeca4d3c682e13f24420944ca845",
                 "shasum": ""
             },
             "require": {
@@ -75,10 +75,10 @@
             ],
             "description": "Classes and methods for conveniently handling binary data",
             "support": {
-                "source": "https://github.com/pmmp/BinaryUtils/tree/master",
+                "source": "https://github.com/pmmp/BinaryUtils/tree/0.1.2",
                 "issues": "https://github.com/pmmp/BinaryUtils/issues"
             },
-            "time": "2018-08-26T18:11:05+00:00"
+            "time": "2018-12-22T12:29:30+00:00"
         },
         {
             "name": "pocketmine/math",
diff --git a/src/pocketmine/entity/Attribute.php b/src/pocketmine/entity/Attribute.php
index 15b2664a1..795e908d5 100644
--- a/src/pocketmine/entity/Attribute.php
+++ b/src/pocketmine/entity/Attribute.php
@@ -171,7 +171,7 @@ class Attribute{
 	}
 
 	public function resetToDefault() : void{
-		$this->setValue($this->getDefaultValue());
+		$this->setValue($this->getDefaultValue(), true);
 	}
 
 	public function getValue() : float{
diff --git a/src/pocketmine/level/format/io/leveldb/LevelDB.php b/src/pocketmine/level/format/io/leveldb/LevelDB.php
index 725c572ff..6cb56b238 100644
--- a/src/pocketmine/level/format/io/leveldb/LevelDB.php
+++ b/src/pocketmine/level/format/io/leveldb/LevelDB.php
@@ -283,6 +283,11 @@ class LevelDB extends BaseLevelProvider{
 		/** @var SubChunk[] $subChunks */
 		$subChunks = [];
 
+		/** @var int[] $heightMap */
+		$heightMap = [];
+		/** @var string $biomeIds */
+		$biomeIds = "";
+
 		/** @var bool $lightPopulated */
 		$lightPopulated = true;
 
@@ -325,10 +330,12 @@ class LevelDB extends BaseLevelProvider{
 					}
 				}
 
-				$binaryStream->setBuffer($this->db->get($index . self::TAG_DATA_2D), 0);
+				if(($maps2d = $this->db->get($index . self::TAG_DATA_2D)) !== false){
+					$binaryStream->setBuffer($maps2d, 0);
 
-				$heightMap = array_values(unpack("v*", $binaryStream->get(512)));
-				$biomeIds = $binaryStream->get(256);
+					$heightMap = array_values(unpack("v*", $binaryStream->get(512)));
+					$biomeIds = $binaryStream->get(256);
+				}
 				break;
 			case 2: // < MCPE 1.0
 				$binaryStream->setBuffer($this->db->get($index . self::TAG_LEGACY_TERRAIN));
diff --git a/src/pocketmine/utils/Utils.php b/src/pocketmine/utils/Utils.php
index 076c6222b..23b3a0af9 100644
--- a/src/pocketmine/utils/Utils.php
+++ b/src/pocketmine/utils/Utils.php
@@ -313,8 +313,8 @@ class Utils{
 							++$processors;
 						}
 					}
-				}else{
-					if(preg_match("/^([0-9]+)\\-([0-9]+)$/", trim(@file_get_contents("/sys/devices/system/cpu/present")), $matches) > 0){
+				}elseif(is_readable("/sys/devices/system/cpu/present")){
+					if(preg_match("/^([0-9]+)\\-([0-9]+)$/", trim(file_get_contents("/sys/devices/system/cpu/present")), $matches) > 0){
 						$processors = (int) ($matches[2] - $matches[1]);
 					}
 				}