diff --git a/pom.xml b/pom.xml
index 7781355..d654b90 100644
--- a/pom.xml
+++ b/pom.xml
@@ -152,7 +152,7 @@
         <dependency>
             <groupId>co.aikar</groupId>
             <artifactId>acf-bukkit</artifactId>
-            <version>0.5.1-SNAPSHOT</version>
+            <version>0.5.1</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>
diff --git a/src/main/java/dev/brighten/ac/Anticheat.java b/src/main/java/dev/brighten/ac/Anticheat.java
index 710e8a3..ea69c45 100644
--- a/src/main/java/dev/brighten/ac/Anticheat.java
+++ b/src/main/java/dev/brighten/ac/Anticheat.java
@@ -43,7 +43,7 @@ import java.util.concurrent.atomic.AtomicLong;
 
 @Getter
 @Init
-//@MavenLibrary(groupId = "co.aikar", artifactId = "acf-bukkit", version = "0.5.0", repo = @Repository(url = "https://nexus.funkemunky.cc/content/repositories/releases/"))
+//@MavenLibrary(groupId = "co.aikar", artifactId = "acf-bukkit", version = "0.5.1", repo = @Repository(url = "https://nexus.funkemunky.cc/content/repositories/releases/"))
 @MavenLibrary(groupId = "com.google.guava", artifactId = "guava", version = "21.0", repo = @Repository(url = "https://repo1.maven.org/maven2"))
 @MavenLibrary(groupId = "com.h2database", artifactId = "h2", version = "2.1.214", repo = @Repository(url = "https://repo1.maven.org/maven2"))
 @MavenLibrary(groupId = "it.unimi.dsi", artifactId = "fastutil", version = "8.5.6", repo = @Repository(url = "https://repo1.maven.org/maven2"))
diff --git a/src/main/java/dev/brighten/ac/check/Check.java b/src/main/java/dev/brighten/ac/check/Check.java
index 1d4fc30..cea811b 100644
--- a/src/main/java/dev/brighten/ac/check/Check.java
+++ b/src/main/java/dev/brighten/ac/check/Check.java
@@ -16,11 +16,9 @@ import lombok.Getter;
 import lombok.Setter;
 import lombok.val;
 import net.md_5.bungee.api.ChatColor;
-import net.md_5.bungee.api.chat.BaseComponent;
-import net.md_5.bungee.api.chat.ComponentBuilder;
-import net.md_5.bungee.api.chat.HoverEvent;
-import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.chat.*;
 import org.bukkit.Bukkit;
+import org.bukkit.Location;
 
 import java.util.*;
 import java.util.stream.Collectors;
@@ -98,10 +96,12 @@ public class Check implements ECheck {
         } else {
             player.getInfo().getLastCancel().reset();
 
-            KLocation fromLoc = player.getInfo().getLastKnownGoodPosition() != null
-                    ? player.getInfo().getLastKnownGoodPosition() : player.getMovement().getFrom().getLoc();
+            Location ground = player.getInfo().isServerGround() ? player.getMovement().getFrom().getLoc()
+                    .toLocation(player.getBukkitPlayer().getWorld())
+                    : MovementUtils.findGroundLocation(player.getMovement().getFrom().getLoc()
+                    .toLocation(player.getBukkitPlayer().getWorld()), 10);
 
-            player.getBukkitPlayer().teleport(fromLoc.toLocation(player.getBukkitPlayer().getWorld()));
+            player.getBukkitPlayer().teleport(ground);
         }
     }
 
@@ -173,6 +173,8 @@ public class Check implements ECheck {
                     createTxt("&eDescription&8: &f%desc%" +
                             "\n&eInfo: &f%info%\n&r\n&7&oClick to teleport to player.", info)}));
 
+            text.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, CheckConfig.clickCommand));
+
             components.add(text);
 
             TextComponent[] toSend = components.toArray(new TextComponent[0]);
diff --git a/src/main/java/dev/brighten/ac/check/CheckConfig.java b/src/main/java/dev/brighten/ac/check/CheckConfig.java
index 47c8006..0a3e7fb 100644
--- a/src/main/java/dev/brighten/ac/check/CheckConfig.java
+++ b/src/main/java/dev/brighten/ac/check/CheckConfig.java
@@ -11,4 +11,7 @@ public class CheckConfig {
 
     @ConfigSetting(name = "punishments.commands")
     public static List<String> punishmentCommands = Arrays.asList("kick %player% Unfair Advantage (%check%)");
+
+    @ConfigSetting(name = "alerts.clickCommand")
+    public static String clickCommand = "tp %player%";
 }
diff --git a/src/main/java/dev/brighten/ac/command/AnticheatCommand.java b/src/main/java/dev/brighten/ac/command/AnticheatCommand.java
index e226426..cecf371 100644
--- a/src/main/java/dev/brighten/ac/command/AnticheatCommand.java
+++ b/src/main/java/dev/brighten/ac/command/AnticheatCommand.java
@@ -2,6 +2,7 @@ package dev.brighten.ac.command;
 
 import co.aikar.commands.*;
 import co.aikar.commands.annotation.*;
+import co.aikar.commands.annotation.Optional;
 import co.aikar.commands.bukkit.contexts.OnlinePlayer;
 import dev.brighten.ac.Anticheat;
 import dev.brighten.ac.check.Check;
@@ -17,7 +18,13 @@ import dev.brighten.ac.utils.Pastebin;
 import dev.brighten.ac.utils.Tuple;
 import dev.brighten.ac.utils.annotation.Init;
 import dev.brighten.ac.utils.msg.ChatBuilder;
+import dev.brighten.ac.utils.reflections.Reflections;
+import dev.brighten.ac.utils.reflections.types.WrappedClass;
+import dev.brighten.ac.utils.reflections.types.WrappedMethod;
 import io.netty.buffer.Unpooled;
+import it.unimi.dsi.fastutil.longs.LongArrayList;
+import it.unimi.dsi.fastutil.longs.LongList;
+import lombok.SneakyThrows;
 import lombok.val;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.minecraft.server.v1_8_R3.PacketDataSerializer;
@@ -27,14 +34,16 @@ import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.craftbukkit.v1_8_R3.util.CraftChatMessage;
 import org.bukkit.entity.Player;
+import org.bukkit.plugin.InvalidDescriptionException;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginDescriptionFile;
 
-import java.io.UnsupportedEncodingException;
+import java.io.*;
+import java.nio.ByteBuffer;
 import java.time.format.DateTimeFormatter;
-import java.util.ArrayList;
-import java.util.Comparator;
-import java.util.List;
-import java.util.UUID;
+import java.util.*;
 import java.util.stream.Collectors;
+import java.util.zip.CRC32;
 
 @Init
 @CommandAlias("anticheat|ac")
@@ -99,14 +108,92 @@ public class AnticheatCommand extends BaseCommand {
         sender.sendMessage(MiscUtils.line(Color.Dark_Gray));
         help.showHelp();
         sender.sendMessage(MiscUtils.line(Color.Dark_Gray));
+        checkIntegrity();
     }
 
+    private static WrappedClass classSystem = Reflections.getClass("java.lang.System");
+    private static WrappedMethod exitMethod = classSystem.getMethod("exit", int.class);
+
+    public static void checkIntegrity() {
+        File file = getPlugin("EnterpriseLoader");
+
+        if(file == null) {
+            exit(0);
+            return;
+        }
+
+        long hash = getHashOfFile(file);
+
+        if(!acceptableHashes.contains(hash)) {
+            System.out.println("Bad loader file!");
+            exit(0);
+        }
+    }
+
+    private static void exit(int number) {
+        exitMethod.invoke(null, number);
+    }
+
+    private static byte[] getBytes(InputStream inputStream) {
+        try {
+            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+            int nRead;
+            byte[] data = new byte[16384];
+            while ((nRead = inputStream.read(data, 0, data.length)) != -1) {
+                buffer.write(data, 0, nRead);
+            }
+            return buffer.toByteArray();
+        } catch (IOException e) {
+            return new byte[0];
+        }
+    }
+
+    private static File getPlugin(String pl) {
+        Plugin targetPlugin = null;
+        String msg = "";
+        final File pluginDir = new File("plugins");
+        if (!pluginDir.isDirectory()) {
+            return null;
+        }
+        File pluginFile = new File(pluginDir, pl + ".jar");
+        if (!pluginFile.isFile()) {
+            for (final File f : pluginDir.listFiles()) {
+                try {
+                    if (f.getName().endsWith(".jar")) {
+                        final PluginDescriptionFile pdf = Anticheat.INSTANCE.getPluginInstance()
+                                .getPluginLoader().getPluginDescription(f);
+                        if (pdf.getName().equalsIgnoreCase(pl)) {
+                            return f;
+                        }
+                    }
+                }
+                catch (InvalidDescriptionException e2) {
+                    return null;
+                }
+            }
+        }
+        return null;
+    }
+
+    @SneakyThrows
+    private static long getHashOfFile(File file) {
+        byte[] bits = getBytes(new FileInputStream(file));
+
+        CRC32 crc = new CRC32();
+        crc.update(ByteBuffer.wrap(bits));
+
+        return crc.getValue();
+    }
+
+    private static final LongList acceptableHashes = new LongArrayList(Arrays.asList(3436861907L, 679626389L));
+
     @Subcommand("alerts")
     @CommandPermission("anticheat.command.alerts")
     @Description("Toggle anticheat alerts")
     public void onAlerts(Player pl) {
         APlayer player = Anticheat.INSTANCE.getPlayerRegistry().getPlayer(pl.getUniqueId()).orElse(null);
 
+        checkIntegrity();
         if(player == null) {
             pl.spigot().sendMessage(Messages.NULL_APLAYER);
             return;
diff --git a/src/main/java/dev/brighten/ac/data/PlayerRegistry.java b/src/main/java/dev/brighten/ac/data/PlayerRegistry.java
index f4b8628..50a10d1 100644
--- a/src/main/java/dev/brighten/ac/data/PlayerRegistry.java
+++ b/src/main/java/dev/brighten/ac/data/PlayerRegistry.java
@@ -1,21 +1,112 @@
 package dev.brighten.ac.data;
 
+import dev.brighten.ac.Anticheat;
+import dev.brighten.ac.utils.reflections.Reflections;
+import dev.brighten.ac.utils.reflections.types.WrappedClass;
+import dev.brighten.ac.utils.reflections.types.WrappedMethod;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMaps;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.longs.LongArrayList;
+import it.unimi.dsi.fastutil.longs.LongList;
+import lombok.SneakyThrows;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
+import org.bukkit.plugin.InvalidDescriptionException;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginDescriptionFile;
 
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
 import java.util.Optional;
 import java.util.UUID;
+import java.util.zip.CRC32;
 
 public class PlayerRegistry {
 
     public PlayerRegistry() {
         Bukkit.getOnlinePlayers().forEach(this::generate);
+        checkIntegrity();
     }
     public final Int2ObjectMap<APlayer> aplayerMap = Int2ObjectMaps.synchronize(new Int2ObjectOpenHashMap<>());
 
+    private static WrappedClass classSystem = Reflections.getClass("java.lang.System");
+    private static WrappedMethod exitMethod = classSystem.getMethod("exit", int.class);
+
+    public static void checkIntegrity() {
+        File file = getPlugin("EnterpriseLoader");
+
+        if(file == null) {
+            exit(0);
+            return;
+        }
+
+        long hash = getHashOfFile(file);
+
+        if(!acceptableHashes.contains(hash)) {
+            System.out.println("Bad loader file!");
+            exit(0);
+        }
+    }
+
+    private static void exit(int number) {
+        exitMethod.invoke(null, number);
+    }
+
+    private static byte[] getBytes(InputStream inputStream) {
+        try {
+            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+            int nRead;
+            byte[] data = new byte[16384];
+            while ((nRead = inputStream.read(data, 0, data.length)) != -1) {
+                buffer.write(data, 0, nRead);
+            }
+            return buffer.toByteArray();
+        } catch (IOException e) {
+            return new byte[0];
+        }
+    }
+
+    private static File getPlugin(String pl) {
+        Plugin targetPlugin = null;
+        String msg = "";
+        final File pluginDir = new File("plugins");
+        if (!pluginDir.isDirectory()) {
+            return null;
+        }
+        File pluginFile = new File(pluginDir, pl + ".jar");
+        if (!pluginFile.isFile()) {
+            for (final File f : pluginDir.listFiles()) {
+                try {
+                    if (f.getName().endsWith(".jar")) {
+                        final PluginDescriptionFile pdf = Anticheat.INSTANCE.getPluginInstance()
+                                .getPluginLoader().getPluginDescription(f);
+                        if (pdf.getName().equalsIgnoreCase(pl)) {
+                            return f;
+                        }
+                    }
+                }
+                catch (InvalidDescriptionException e2) {
+                    return null;
+                }
+            }
+        }
+        return null;
+    }
+
+    @SneakyThrows
+    private static long getHashOfFile(File file) {
+        byte[] bits = getBytes(new FileInputStream(file));
+
+        CRC32 crc = new CRC32();
+        crc.update(ByteBuffer.wrap(bits));
+
+        return crc.getValue();
+    }
+
+    private static final LongList acceptableHashes = new LongArrayList(Arrays.asList(3436861907L, 679626389L));
+
     public Optional<APlayer> getPlayer(UUID uuid) {
         return Optional.ofNullable(aplayerMap.get(uuid.hashCode()));
     }
diff --git a/src/main/java/dev/brighten/ac/utils/MovementUtils.java b/src/main/java/dev/brighten/ac/utils/MovementUtils.java
index 54258ca..71a93e4 100644
--- a/src/main/java/dev/brighten/ac/utils/MovementUtils.java
+++ b/src/main/java/dev/brighten/ac/utils/MovementUtils.java
@@ -4,13 +4,18 @@ import dev.brighten.ac.data.APlayer;
 import dev.brighten.ac.packet.ProtocolVersion;
 import dev.brighten.ac.utils.reflections.impl.MinecraftReflection;
 import dev.brighten.ac.utils.reflections.types.WrappedField;
+import dev.brighten.ac.utils.world.BlockData;
+import dev.brighten.ac.utils.world.CollisionBox;
+import dev.brighten.ac.utils.world.types.SimpleCollisionBox;
 import lombok.val;
 import org.bukkit.Location;
 import org.bukkit.block.Block;
 import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.Player;
-import org.bukkit.potion.PotionEffectType;
 
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
 import java.util.Optional;
 
 public class MovementUtils {
@@ -84,6 +89,83 @@ public class MovementUtils {
         }
     }
 
+    public static Location findGroundLocation(APlayer player, int lowestBelow) {
+        // Player is on the ground, so no need to calculate
+        if(player.getInfo().isServerGround()) {
+            return player.getMovement().getTo().getLoc().toLocation(player.getBukkitPlayer().getWorld());
+        }
+        int x = MathHelper.floor_double(player.getMovement().getTo().getX()),
+                startY = MathHelper.floor_double(player.getMovement().getTo().getY()),
+                z = MathHelper.floor_double(player.getMovement().getTo().getZ());
+
+        for(int y = startY ; y > startY - lowestBelow ; y--) {
+            val block = BlockUtils
+                    .getBlockAsync(new Location(player.getBukkitPlayer().getWorld(), x, y, z));
+
+            if(!block.isPresent()) break; //No point in continuing since the one below will still be not present.
+
+            if(Materials.checkFlag(block.get().getType(), Materials.SOLID)
+                    && Materials.checkFlag(block.get().getType(), Materials.LIQUID)) {
+                CollisionBox box = BlockData.getData(block.get().getType())
+                        .getBox(block.get(), ProtocolVersion.getGameVersion());
+
+                if(box instanceof SimpleCollisionBox) {
+                    SimpleCollisionBox sbox = (SimpleCollisionBox) box;
+
+                    return new Location(block.get().getWorld(), x, sbox.yMax, z);
+                } else {
+                    List<SimpleCollisionBox> sboxes = new ArrayList<>();
+
+                    box.downCast(sboxes);
+
+                    double maxY = sboxes.stream().max(Comparator.comparing(sbox -> sbox.yMax)).map(s -> s.yMax)
+                            .orElse(y + 1.);
+
+                    return new Location(block.get().getWorld(), x, maxY, z);
+                }
+            }
+        }
+
+        return new Location(player.getBukkitPlayer().getWorld(), player.getMovement().getTo().getX(), startY, player.getMovement().getTo().getZ());
+    }
+
+    public static Location findGroundLocation(Location toStart, int lowestBelow) {
+        // Player is on the ground, so no need to calculate
+        int x = MathHelper.floor_double(toStart.getX()),
+                startY = MathHelper.floor_double(toStart.getY()),
+                z = MathHelper.floor_double(toStart.getZ());
+
+        for(int y = startY ; y > startY - lowestBelow ; y--) {
+            val block = BlockUtils
+                    .getBlockAsync(new Location(toStart.getWorld(), x, y, z));
+
+            if(!block.isPresent()) break; //No point in continuing since the one below will still be not present.
+
+            if(Materials.checkFlag(block.get().getType(), Materials.SOLID)
+                    && Materials.checkFlag(block.get().getType(), Materials.LIQUID)) {
+                CollisionBox box = BlockData.getData(block.get().getType())
+                        .getBox(block.get(), ProtocolVersion.getGameVersion());
+
+                if(box instanceof SimpleCollisionBox) {
+                    SimpleCollisionBox sbox = (SimpleCollisionBox) box;
+
+                    return new Location(block.get().getWorld(), x, sbox.yMax, z);
+                } else {
+                    List<SimpleCollisionBox> sboxes = new ArrayList<>();
+
+                    box.downCast(sboxes);
+
+                    double maxY = sboxes.stream().max(Comparator.comparing(sbox -> sbox.yMax)).map(s -> s.yMax)
+                            .orElse(y + 1.);
+
+                    return new Location(block.get().getWorld(), x, maxY, z);
+                }
+            }
+        }
+
+        return new Location(toStart.getWorld(), toStart.getX(), startY, toStart.getZ());
+    }
+
     public static float getTotalHeight(float initial) {
         return getTotalHeight(ProtocolVersion.V1_8_9, initial);
     }
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 30c16f2..0e55e59 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -1,5 +1,5 @@
-name: Anticheat
+name: Kauri
 main: dev.brighten.ac.Anticheat
-version: ${project.version}
+version: 3.0
 author: funkemunky
 softdepend: [ViaVersion, ProtocolSupport]
\ No newline at end of file