diff --git a/src/com/massivecraft/massivecore/Progressbar.java b/src/com/massivecraft/massivecore/Progressbar.java
index 32d0b2f1..4f89146f 100644
--- a/src/com/massivecraft/massivecore/Progressbar.java
+++ b/src/com/massivecraft/massivecore/Progressbar.java
@@ -184,7 +184,7 @@ public class Progressbar
 	
 	public static String colorParse(String string, String colorTag, String color)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		string = string.replace(colorTag, color);
 		string = Txt.parse(string);
 		return string;
diff --git a/src/com/massivecraft/massivecore/SoundEffect.java b/src/com/massivecraft/massivecore/SoundEffect.java
index 38bbbe5c..855fab16 100644
--- a/src/com/massivecraft/massivecore/SoundEffect.java
+++ b/src/com/massivecraft/massivecore/SoundEffect.java
@@ -81,12 +81,13 @@ public final class SoundEffect implements Serializable
 	
 	public void run(Location location)
 	{
-		if (location == null) return;
+		if (location == null) throw new NullPointerException("location");
 		location.getWorld().playSound(location, this.getSound(), this.getVolume(), this.getPitch());
 	}
 	
 	public void run(HumanEntity human, Location location)
 	{
+		if (human == null) throw new NullPointerException("human");
 		if (MUtil.isntPlayer(human)) return;
 		Player player = (Player)human;
 		player.playSound(location, this.getSound(), this.getVolume(), this.getPitch());
@@ -94,6 +95,7 @@ public final class SoundEffect implements Serializable
 	
 	public void run(HumanEntity human)
 	{
+		if (human == null) throw new NullPointerException("human");
 		if (MUtil.isntPlayer(human)) return;
 		this.run(human, human.getEyeLocation());
 	}
@@ -144,8 +146,6 @@ public final class SoundEffect implements Serializable
 	@Override
 	public boolean equals(Object obj)
 	{
-		if (this == obj) return true;
-		if (obj == null) return false;
 		if (!(obj instanceof SoundEffect)) return false;
 		SoundEffect other = (SoundEffect) obj;
 		if (Float.floatToIntBits(pitch) != Float.floatToIntBits(other.pitch)) return false;
diff --git a/src/com/massivecraft/massivecore/command/MassiveCommand.java b/src/com/massivecraft/massivecore/command/MassiveCommand.java
index a0120314..26931945 100644
--- a/src/com/massivecraft/massivecore/command/MassiveCommand.java
+++ b/src/com/massivecraft/massivecore/command/MassiveCommand.java
@@ -1650,28 +1650,5 @@ public class MassiveCommand implements Active, PluginIdentifiableCommand
 		// Increment is done in this method
 		return readArgAt(idx);
 	}
-
-	// TODO: Some of these are still used by external plugins.
-	// TODO: Fix those plugins.
-
-	@Deprecated
-	public <T> T readArgFrom(Type<T> type) throws MassiveException
-	{
-		return this.readArgFrom(null, type);
-	}
-
-	@Deprecated
-	public <T> T readArgFrom(String str, Type<T> type) throws MassiveException
-	{
-		if (type == null) throw new IllegalArgumentException("type is null");
-		return type.read(str, this.sender);
-	}
-
-	@Deprecated
-	public <T> T readArgFrom(String str, Type<T> type, T defaultNotSet) throws MassiveException
-	{
-		if (str == null) return defaultNotSet;
-		return this.readArgFrom(str, type);
-	}
 	
 }
diff --git a/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerState.java b/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerState.java
index 5593e49f..e1d185b5 100644
--- a/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerState.java
+++ b/src/com/massivecraft/massivecore/engine/EngineMassiveCorePlayerState.java
@@ -35,7 +35,7 @@ public class EngineMassiveCorePlayerState extends Engine
 		if ( ! active) return;
 		
 		this.idToState.clear();
-		for (Player player : MUtil.getOnlinePlayers())
+		for (Player player : Bukkit.getOnlinePlayers())
 		{
 			this.idToState.put(player.getUniqueId(), PlayerState.JOINED);
 		}
diff --git a/src/com/massivecraft/massivecore/mixin/MixinVisibility.java b/src/com/massivecraft/massivecore/mixin/MixinVisibility.java
index 4649272c..916ece6c 100644
--- a/src/com/massivecraft/massivecore/mixin/MixinVisibility.java
+++ b/src/com/massivecraft/massivecore/mixin/MixinVisibility.java
@@ -1,7 +1,7 @@
 package com.massivecraft.massivecore.mixin;
 
 import com.massivecraft.massivecore.util.IdUtil;
-import com.massivecraft.massivecore.util.MUtil;
+import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 
 public class MixinVisibility extends Mixin
@@ -29,7 +29,7 @@ public class MixinVisibility extends Mixin
 		Player pwatchee = IdUtil.getPlayer(watcheeObject);
 		if (pwatchee == null) return true;
 		
-		for (Player pwatcher : MUtil.getOnlinePlayers())
+		for (Player pwatcher : Bukkit.getOnlinePlayers())
 		{
 			if (pwatchee.equals(pwatcher)) continue;
 			if (pwatcher.canSee(pwatchee)) continue;
diff --git a/src/com/massivecraft/massivecore/particleeffect/ParticleEffect.java b/src/com/massivecraft/massivecore/particleeffect/ParticleEffect.java
index 2693c19f..bdd08994 100644
--- a/src/com/massivecraft/massivecore/particleeffect/ParticleEffect.java
+++ b/src/com/massivecraft/massivecore/particleeffect/ParticleEffect.java
@@ -1,8 +1,8 @@
 package com.massivecraft.massivecore.particleeffect;
 
 import com.massivecraft.massivecore.particleeffect.ReflectionUtils.PackageType;
-import com.massivecraft.massivecore.util.MUtil;
 import com.massivecraft.massivecore.util.ReflectionUtil;
+import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -1512,7 +1512,7 @@ public enum ParticleEffect {
 			}
 			String worldName = center.getWorld().getName();
 			double squared = range * range;
-			for (Player player : MUtil.getOnlinePlayers()) {
+			for (Player player : Bukkit.getOnlinePlayers()) {
 				if (!player.getWorld().getName().equals(worldName) || player.getLocation().distanceSquared(center) > squared) {
 					continue;
 				}
diff --git a/src/com/massivecraft/massivecore/util/BoardUtil.java b/src/com/massivecraft/massivecore/util/BoardUtil.java
index d7ef61f5..3509c891 100644
--- a/src/com/massivecraft/massivecore/util/BoardUtil.java
+++ b/src/com/massivecraft/massivecore/util/BoardUtil.java
@@ -145,7 +145,7 @@ public class BoardUtil extends Engine
 		Map<String, Player> players = new MassiveMap<>();
 		
 		// Fill
-		for (Player player : MUtil.getOnlinePlayers())
+		for (Player player : Bukkit.getOnlinePlayers())
 		{
 			players.put(player.getName(), player);
 		}
diff --git a/src/com/massivecraft/massivecore/util/IdUtil.java b/src/com/massivecraft/massivecore/util/IdUtil.java
index a8aa6611..a2beb2ac 100644
--- a/src/com/massivecraft/massivecore/util/IdUtil.java
+++ b/src/com/massivecraft/massivecore/util/IdUtil.java
@@ -181,7 +181,7 @@ public class IdUtil implements Listener, Runnable
 		Set<CommandSender> ret = new MassiveSet<>();
 		
 		// Add Online Players
-		ret.addAll(MUtil.getOnlinePlayers());
+		ret.addAll(Bukkit.getOnlinePlayers());
 		
 		// Add Console
 		ret.add(getConsole());
@@ -461,7 +461,7 @@ public class IdUtil implements Listener, Runnable
 	public static IdData getData(Object senderObject)
 	{
 		// Null Return
-		if (senderObject == null) return null;
+		if (senderObject == null) throw new NullPointerException("senderObject");
 		
 		// Already Done
 		if (senderObject instanceof IdData) return (IdData) senderObject;
@@ -525,7 +525,7 @@ public class IdUtil implements Listener, Runnable
 	public static CommandSender getSender(Object senderObject)
 	{
 		// Null Return
-		if (senderObject == null) return null;
+		if (senderObject == null) throw new NullPointerException("senderObject");
 		
 		// Already Done
 		if (senderObject instanceof CommandSender) return (CommandSender) senderObject;
@@ -590,7 +590,7 @@ public class IdUtil implements Listener, Runnable
 	public static UUID getUuid(Object senderObject)
 	{
 		// Null Return
-		if (senderObject == null) return null;
+		if (senderObject == null) throw new NullPointerException("senderObject");
 		
 		// Already Done
 		if (senderObject instanceof UUID) return (UUID)senderObject;
@@ -655,7 +655,7 @@ public class IdUtil implements Listener, Runnable
 	public static String getId(Object senderObject)
 	{
 		// Null Return
-		if (senderObject == null) return null;
+		if (senderObject == null) throw new NullPointerException("senderObject");
 		
 		// Already Done
 		if (senderObject instanceof String && MUtil.isUuid((String)senderObject)) return (String)senderObject;
@@ -731,7 +731,7 @@ public class IdUtil implements Listener, Runnable
 	public static String getName(Object senderObject)
 	{
 		// Null Return
-		if (senderObject == null) return null;
+		if (senderObject == null) throw new NullPointerException("senderObject");
 		
 		// Already Done
 		// Handled at "Data" (not applicable - names can look differently)
@@ -780,7 +780,7 @@ public class IdUtil implements Listener, Runnable
 	public static OfflinePlayer getOfflinePlayer(Object senderObject)
 	{
 		// Null Return
-		if (senderObject == null) return null;
+		if (senderObject == null) throw new NullPointerException("senderObject");
 
 		// Already done
 		if (senderObject instanceof OfflinePlayer) return (OfflinePlayer) senderObject;
@@ -965,7 +965,7 @@ public class IdUtil implements Listener, Runnable
 		
 		long millis = System.currentTimeMillis();
 		
-		for (Player player : MUtil.getOnlinePlayers())
+		for (Player player : Bukkit.getOnlinePlayers())
 		{
 			String id = getId(player);
 			if (id == null) throw new NullPointerException("id");
diff --git a/src/com/massivecraft/massivecore/util/MUtil.java b/src/com/massivecraft/massivecore/util/MUtil.java
index 24c7eda4..61d3a3f6 100644
--- a/src/com/massivecraft/massivecore/util/MUtil.java
+++ b/src/com/massivecraft/massivecore/util/MUtil.java
@@ -56,7 +56,6 @@ import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 import org.bukkit.projectiles.ProjectileSource;
 
-import java.lang.reflect.Method;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.net.InetAddress;
@@ -81,99 +80,17 @@ import java.util.regex.Pattern;
 
 public class MUtil
 {
-	// -------------------------------------------- //
-	// CONSTANTS
-	// -------------------------------------------- //
-	
-	private static Method methodGetOnlinePlayers;
-	
-	static
-	{
-		methodGetOnlinePlayers = getMethodGetOnlinePlayers();
-	}
-
 	// -------------------------------------------- //
 	// GET ONLINE PLAYERS
 	// -------------------------------------------- //
-	// It seems we can not always trust the Bukkit.getOnlinePlayers() method.
-	// Due to compilation issue this method might not exist in the form we compiled against.
-	// Spigot 1.8 and the 1.7 Bukkit might have been compiled slightly differently resulting in this issue.
-	// Issue Example: https://github.com/MassiveCraft/MassiveCore/issues/192
-	
-	public static Method getMethodGetOnlinePlayers()
-	{
-		Method ret = null;
-		
-		try
-		{
-			for (Method method : Bukkit.class.getDeclaredMethods())
-			{
-				// The method name must be getOnlinePlayers ...
-				if ( ! method.getName().equals("getOnlinePlayers")) continue;
-				
-				// ... if we find such a method it's better than nothing ...
-				if (ret == null) ret = method;
-				
-				// ... but if the method additionally returns a collection ...
-				if ( ! method.getReturnType().isAssignableFrom(Collection.class)) continue;
-				
-				// ... that is preferable ...
-				ret = method;
-				
-				// ... and we need not look any further.
-				break;
-			}
-			
-			ret.setAccessible(true);
-		}
-		catch (Exception e)
-		{
-			// If we fail we do so silently.
-			// This method is probably almost never going to be used anyways.
-		}
-		
-		return ret;
-	}
-	
+	// Old thing that had to do with the converfrion from 1.17 to 1.8
+
+	@Deprecated
 	public static Collection<Player> getOnlinePlayers()
 	{
-		// Fetch some kind of playersObject.
-		Object playersObject = null;
-		try
-		{
-			playersObject = Bukkit.getOnlinePlayers();
-		}
-		catch (Throwable t)
-		{
-			// That didn't work!
-			// We probably just caught a NoSuchMethodError.
-			// So let's try with reflection instead.
-			try
-			{
-				playersObject = methodGetOnlinePlayers.invoke(null);
-			}
-			catch (Exception e)
-			{
-				e.printStackTrace();
-			}
-		}
-		
-		// Now return the playersObject.
-		if (playersObject instanceof Collection<?>)
-		{
-			@SuppressWarnings("unchecked")
-			Collection<Player> playersCollection = (Collection<Player>)playersObject;
-			return playersCollection;
-		}
-		else if (playersObject instanceof Player[])
-		{
-			Player[] playersArray = (Player[])playersObject;
-			return Arrays.asList(playersArray);
-		}
-		else
-		{
-			throw new RuntimeException("Failed retrieving online players.");
-		}
+		Collection<? extends Player>coll = Bukkit.getOnlinePlayers();
+		List<Player> ret = new MassiveList<>(coll.size());
+		return ret;
 	}
 	
 	// -------------------------------------------- //
@@ -195,7 +112,7 @@ public class MUtil
 		// Fill
 		final World world = location.getWorld();
 		final double radiusSquared = radius * radius;
-		for (Player player : MUtil.getOnlinePlayers())
+		for (Player player : Bukkit.getOnlinePlayers())
 		{
 			Location playerLocation = player.getLocation();
 			World playerWorld = playerLocation.getWorld();
@@ -251,7 +168,7 @@ public class MUtil
 	public static UUID asUuid(String string)
 	{
 		// Null
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		
 		// Avoid Exception
 		if (string.length() != 36) return null;
@@ -285,7 +202,7 @@ public class MUtil
 	
 	public static boolean containsCommand(String needle, Iterable<String> haystack)
 	{
-		if (needle == null) return false;
+		if (needle == null) throw new NullPointerException("needle");
 		needle = prepareCommand(needle);
 		
 		for (String straw : haystack)
@@ -314,7 +231,7 @@ public class MUtil
 	
 	private static String prepareCommand(String string)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		string = Txt.removeLeadingCommandDust(string);
 		string = string.toLowerCase();
 		string = string.trim();
@@ -384,6 +301,8 @@ public class MUtil
 	
 	public static boolean isNpc(Object object)
 	{
+		if (object == null) throw new NullPointerException("object");
+
 		if ( ! (object instanceof Metadatable)) return false;
 		Metadatable metadatable = (Metadatable)object;
 		try
@@ -405,6 +324,8 @@ public class MUtil
 	
 	public static boolean isSender(Object object)
 	{
+		if (object == null) throw new NullPointerException("object");
+
 		if (!(object instanceof CommandSender)) return false;
 		if (isNpc(object)) return false;
 		return true;
@@ -416,6 +337,8 @@ public class MUtil
 	
 	public static boolean isPlayer(Object object)
 	{
+		if (object == null) throw new NullPointerException("object");
+
 		if (!(object instanceof Player)) return false;
 		if (isNpc(object)) return false;
 		return true;
@@ -953,7 +876,7 @@ public class MUtil
 	
 	public static <T> T regexPickFirstVal(String input, Map<String, T> regex2val)
 	{
-		if (regex2val == null) return null;
+		if (regex2val == null) throw new NullPointerException("regex2val");
 		T ret = null;
 		
 		for (Entry<String, T> entry : regex2val.entrySet())
@@ -969,7 +892,7 @@ public class MUtil
 	
 	public static <E, T> T equalsPickFirstVal(E input, Map<E, T> thing2val)
 	{
-		if (thing2val == null) return null;
+		if (thing2val == null) throw new NullPointerException("thing2val");
 		T ret = null;
 		
 		for (Entry<E, T> entry : thing2val.entrySet())
diff --git a/src/com/massivecraft/massivecore/util/PermissionUtil.java b/src/com/massivecraft/massivecore/util/PermissionUtil.java
index 494490f2..61521af5 100644
--- a/src/com/massivecraft/massivecore/util/PermissionUtil.java
+++ b/src/com/massivecraft/massivecore/util/PermissionUtil.java
@@ -83,7 +83,7 @@ public class PermissionUtil
 	
 	public static String asPermissionId(Object object)
 	{
-		if (object == null) return null;
+		if (object == null) throw new NullPointerException("object");
 		
 		if (object instanceof String) return (String)object;
 		if (object instanceof Identified) return ((Identified)object).getId();
@@ -94,7 +94,7 @@ public class PermissionUtil
 	
 	public static Permission asPermission(Object object)
 	{
-		if (object == null) return null;
+		if (object == null) throw new NullPointerException("object");
 		
 		if (object instanceof Permission) return (Permission)object;
 		
@@ -228,6 +228,8 @@ public class PermissionUtil
 	
 	public static boolean setPermissionStandardChildren(Permission permission, PermissionDefault standard, Map<String, Boolean> children)
 	{
+		if (permission == null) throw new NullPointerException("permission");
+
 		boolean childrenChanged = false;
 		boolean standardChanged = false;
 		
diff --git a/src/com/massivecraft/massivecore/util/PlayerUtil.java b/src/com/massivecraft/massivecore/util/PlayerUtil.java
index a51abb63..0423f96e 100644
--- a/src/com/massivecraft/massivecore/util/PlayerUtil.java
+++ b/src/com/massivecraft/massivecore/util/PlayerUtil.java
@@ -64,7 +64,7 @@ public class PlayerUtil extends Engine
 	
 	public static void setLastMoveMillis(Player player, long millis)
 	{
-		if (player == null) return;
+		if (player == null) throw new NullPointerException("player");
 		idToLastMoveMillis.put(player.getUniqueId(), millis);
 	}
 	
@@ -94,7 +94,7 @@ public class PlayerUtil extends Engine
 	
 	public static long getLastMoveMillis(Player player)
 	{
-		if (player == null) return 0;
+		if (player == null) throw new NullPointerException("player");
 		Long ret = idToLastMoveMillis.get(player.getUniqueId());
 		if (ret == null) return 0;
 		return ret;
@@ -102,7 +102,7 @@ public class PlayerUtil extends Engine
 	
 	public static long getStandStillMillis(Player player)
 	{
-		if (player == null) return 0;
+		if (player == null) throw new NullPointerException("player");
 		if (player.isDead()) return 0;
 		if (!player.isOnline()) return 0;
 		
@@ -122,8 +122,8 @@ public class PlayerUtil extends Engine
 	
 	public static void setLastDamageMillis(Player player, long millis)
 	{
+		if (player == null) throw new NullPointerException("player");
 		if (MUtil.isntPlayer(player)) return;
-		if (player == null) return;
 		idToLastDamageMillis.put(player.getUniqueId(), millis);
 	}
 	
@@ -157,6 +157,7 @@ public class PlayerUtil extends Engine
 	
 	public static long getLastDamageMillis(Player player)
 	{
+		if (player == null) throw new NullPointerException("player");
 		if (MUtil.isntPlayer(player)) return 0;
 		Long ret = idToLastDamageMillis.get(player.getUniqueId());
 		if (ret == null) return 0;
@@ -165,6 +166,7 @@ public class PlayerUtil extends Engine
 	
 	public static long getNoDamageMillis(Player player)
 	{
+		if (player == null) throw new NullPointerException("player");
 		if (MUtil.isntPlayer(player)) return 0;
 		if (player.isDead()) return 0;
 		if (!player.isOnline()) return 0;
diff --git a/src/com/massivecraft/massivecore/util/SmokeUtil.java b/src/com/massivecraft/massivecore/util/SmokeUtil.java
index 59707278..6730abcd 100644
--- a/src/com/massivecraft/massivecore/util/SmokeUtil.java
+++ b/src/com/massivecraft/massivecore/util/SmokeUtil.java
@@ -34,7 +34,7 @@ public class SmokeUtil
 	// Single ========
 	public static void spawnSingle(Location location, int direction)
 	{
-		if (location == null) return;
+		if (location == null) throw new NullPointerException("location");
 		location.getWorld().playEffect(location, Effect.SMOKE, direction);
 	}
 	
diff --git a/src/com/massivecraft/massivecore/util/TimeUnit.java b/src/com/massivecraft/massivecore/util/TimeUnit.java
index 2a5ca36d..48c271d0 100644
--- a/src/com/massivecraft/massivecore/util/TimeUnit.java
+++ b/src/com/massivecraft/massivecore/util/TimeUnit.java
@@ -70,7 +70,7 @@ public class TimeUnit implements Comparable<TimeUnit>
 	
 	public static TimeUnit get(String timeUnitString)
 	{
-		if (timeUnitString == null) return null;
+		if (timeUnitString == null) throw new NullPointerException("timeUnitString");
 		String timeUnitStringLowerCase = timeUnitString.toLowerCase(); 
 		for (TimeUnit timeUnit : all)
 		{
diff --git a/src/com/massivecraft/massivecore/util/Txt.java b/src/com/massivecraft/massivecore/util/Txt.java
index 488e624f..3f818b96 100644
--- a/src/com/massivecraft/massivecore/util/Txt.java
+++ b/src/com/massivecraft/massivecore/util/Txt.java
@@ -170,7 +170,7 @@ public class Txt
 	
 	public static String parse(String string)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		StringBuffer ret = new StringBuffer();
 		Matcher matcher = parsePattern.matcher(string);
 		while (matcher.find())
@@ -202,7 +202,7 @@ public class Txt
 	
 	public static ArrayList<String> wrap(final String string)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		return new ArrayList<>(Arrays.asList(PATTERN_NEWLINE.split(string)));
 	}
 	
@@ -245,13 +245,13 @@ public class Txt
 	
 	public static String upperCaseFirst(String string)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		if (string.length() == 0) return string;
 		return string.substring(0, 1).toUpperCase() + string.substring(1);
 	}
 	public static String lowerCaseFirst(String string)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		if (string.length() == 0) return string;
 		return string.substring(0, 1).toLowerCase() + string.substring(1);
 	}
@@ -392,7 +392,8 @@ public class Txt
 	
 	public static boolean isVowel(String str)
 	{
-		if (str == null || str.length() == 0) return false;
+		if (str == null) throw new NullPointerException("str");
+		if (str.length() == 0) return false;
 		return vowel.contains(str.substring(0, 1));
 	}
 	
@@ -782,7 +783,7 @@ public class Txt
 	
 	public static String removeSmartQuotes(String string)
 	{
-		if (string == null) return null;
+		if (string == null) throw new NullPointerException("string");
 		
 		// LEFT SINGLE QUOTATION MARK
 		string = string.replace("\u2018", "'");