diff --git a/src/main/java/de/varoplugin/cfw/version/CrucibleVersionAdapter.java b/src/main/java/de/varoplugin/cfw/version/CrucibleVersionAdapter.java
index 74766eb..c2b4697 100644
--- a/src/main/java/de/varoplugin/cfw/version/CrucibleVersionAdapter.java
+++ b/src/main/java/de/varoplugin/cfw/version/CrucibleVersionAdapter.java
@@ -39,7 +39,7 @@ protected void initServerProperties() throws ClassNotFoundException, NoSuchMetho
 
     @Override
     protected void initPlayer() throws NoSuchMethodException, SecurityException, NoSuchFieldException, ClassNotFoundException {
-        this.nmsPlayerClass = Class.forName("org.bukkit.craftbukkit." + VersionUtils.getNmsVersion() + ".entity.CraftPlayer").getMethod("getHandle").getReturnType();
+        this.nmsPlayerClass = Class.forName(VersionUtils.getCraftBukkitPackage() + ".entity.CraftPlayer").getMethod("getHandle").getReturnType();
         this.pingField = this.nmsPlayerClass.getField("field_71138_i");
         this.connectionField = this.nmsPlayerClass.getField("field_71135_a");
         this.sendPacketMethod = this.connectionField.getType().getMethod("func_147359_a", Class.forName("net.minecraft.network.Packet"));
diff --git a/src/main/java/de/varoplugin/cfw/version/OneNineteenVersionAdapter.java b/src/main/java/de/varoplugin/cfw/version/OneNineteenVersionAdapter.java
index c4d612f..0d7c03e 100644
--- a/src/main/java/de/varoplugin/cfw/version/OneNineteenVersionAdapter.java
+++ b/src/main/java/de/varoplugin/cfw/version/OneNineteenVersionAdapter.java
@@ -34,7 +34,7 @@ public class OneNineteenVersionAdapter extends OneSeventeenVersionAdapter {
     @Override
     public void forceClearWorlds() {
         try {
-            Field dedicatedServerField = Class.forName("org.bukkit.craftbukkit." + VersionUtils.getNmsVersion() + ".CraftServer").getDeclaredField("console");
+            Field dedicatedServerField = Class.forName(VersionUtils.getCraftBukkitPackage() + ".CraftServer").getDeclaredField("console");
             dedicatedServerField.setAccessible(true);
             Object dedicatedServer = dedicatedServerField.get(Bukkit.getServer());
             Field worldServerField = dedicatedServer.getClass().getSuperclass().getDeclaredField(this.getWorldServerFieldName());
diff --git a/src/main/java/de/varoplugin/cfw/version/OneSevenVersionAdapter.java b/src/main/java/de/varoplugin/cfw/version/OneSevenVersionAdapter.java
index fe9293e..161ef16 100644
--- a/src/main/java/de/varoplugin/cfw/version/OneSevenVersionAdapter.java
+++ b/src/main/java/de/varoplugin/cfw/version/OneSevenVersionAdapter.java
@@ -88,7 +88,7 @@ protected void initServerProperties() throws ClassNotFoundException, NoSuchMetho
     }
 
     protected void initEntity() throws NoSuchMethodException, SecurityException, ClassNotFoundException {
-        this.entityHandleMethod = Class.forName("org.bukkit.craftbukkit." + VersionUtils.getNmsVersion() + ".entity.CraftEntity").getMethod("getHandle");
+        this.entityHandleMethod = Class.forName(VersionUtils.getCraftBukkitPackage() + ".entity.CraftEntity").getMethod("getHandle");
     }
 
     protected void initPlayer() throws NoSuchMethodException, SecurityException, NoSuchFieldException, ClassNotFoundException {
diff --git a/src/main/java/de/varoplugin/cfw/version/OneSixteenVersionAdapter.java b/src/main/java/de/varoplugin/cfw/version/OneSixteenVersionAdapter.java
index face543..90ce680 100644
--- a/src/main/java/de/varoplugin/cfw/version/OneSixteenVersionAdapter.java
+++ b/src/main/java/de/varoplugin/cfw/version/OneSixteenVersionAdapter.java
@@ -34,7 +34,7 @@ public class OneSixteenVersionAdapter extends OneFourteenVersionAdapter {
     @Override
     public void forceClearWorlds() {
         try {
-            Field dedicatedServerField = Class.forName("org.bukkit.craftbukkit." + VersionUtils.getNmsVersion() + ".CraftServer").getDeclaredField("console");
+            Field dedicatedServerField = Class.forName(VersionUtils.getCraftBukkitPackage() + ".CraftServer").getDeclaredField("console");
             dedicatedServerField.setAccessible(true);
             Object dedicatedServer = dedicatedServerField.get(Bukkit.getServer());
             Map<?, ?> worldServer = (Map<?, ?>) dedicatedServer.getClass().getField(this.getWorldServerFieldName()).get(dedicatedServer);
diff --git a/src/main/java/de/varoplugin/cfw/version/OneTwelveVersionAdapter.java b/src/main/java/de/varoplugin/cfw/version/OneTwelveVersionAdapter.java
index 310b810..c6e675b 100644
--- a/src/main/java/de/varoplugin/cfw/version/OneTwelveVersionAdapter.java
+++ b/src/main/java/de/varoplugin/cfw/version/OneTwelveVersionAdapter.java
@@ -40,7 +40,7 @@ class OneTwelveVersionAdapter extends OneNineVersionAdapter {
     @Override
     protected void initLocale() throws SecurityException, IllegalArgumentException {
         try {
-            this.localeMethod = Class.forName("org.bukkit.craftbukkit." + VersionUtils.getNmsVersion() + ".entity.CraftPlayer").getDeclaredMethod("getLocale");
+            this.localeMethod = Class.forName(VersionUtils.getCraftBukkitPackage() + ".entity.CraftPlayer").getDeclaredMethod("getLocale");
         } catch (NoSuchMethodException | SecurityException | ClassNotFoundException e) {
             e.printStackTrace();
         }
diff --git a/src/main/java/de/varoplugin/cfw/version/OneTwentyVersionAdapter.java b/src/main/java/de/varoplugin/cfw/version/OneTwentyVersionAdapter.java
index d0e450e..32d028e 100644
--- a/src/main/java/de/varoplugin/cfw/version/OneTwentyVersionAdapter.java
+++ b/src/main/java/de/varoplugin/cfw/version/OneTwentyVersionAdapter.java
@@ -28,6 +28,11 @@
 
 public class OneTwentyVersionAdapter extends OneNineteenVersionAdapter {
 
+    @Override
+    protected void initXp() {
+        // nop
+    }
+
     @Override
     public void setXpCooldown(Player player, int cooldown) {
         player.setExpCooldown(cooldown);
diff --git a/src/main/java/de/varoplugin/cfw/version/VersionUtils.java b/src/main/java/de/varoplugin/cfw/version/VersionUtils.java
index 44768b7..96740ab 100644
--- a/src/main/java/de/varoplugin/cfw/version/VersionUtils.java
+++ b/src/main/java/de/varoplugin/cfw/version/VersionUtils.java
@@ -34,6 +34,7 @@ public class VersionUtils {
 
     private static final String FORGE_CLASS = "net.minecraftforge.common.MinecraftForge";
 
+    private static final String craftBukkitPackage;
     private static final String nmsClass;
     private static final String nmsVersion;
     private static final boolean forgeSupport;
@@ -50,18 +51,24 @@ public class VersionUtils {
         if (Bukkit.getServer() == null) {
             version = ServerVersion.UNSUPPORTED;
             serverSoftware = ServerSoftware.UNKNOWN;
+            craftBukkitPackage = null;
             nmsClass = null;
             nmsVersion = null;
         } else {
-
             String base = "net.minecraft";
-            nmsVersion = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
-            if (nmsVersion.startsWith("v1")) {
-                // 1.7 - 1.16
-                nmsClass = base + ".server." + nmsVersion;
+            craftBukkitPackage = Bukkit.getServer().getClass().getPackage().getName();
+            String[] packageSplit = craftBukkitPackage.split("\\.");
+            if (packageSplit.length > 3) {
+                nmsVersion = packageSplit[3];
+                if (nmsVersion.startsWith("v1")) {
+                    // 1.7 - 1.16
+                    nmsClass = base + ".server." + nmsVersion;
+                } else
+                    // Thermos (1.17+ does not use this string at all)
+                    nmsClass = base + ".server";
             } else {
-                // Thermos (1.17+ does not use this string at all)
                 nmsClass = base + ".server";
+                nmsVersion = Bukkit.getServer().getBukkitVersion().split("-")[0].replace('.', '_');
             }
             version = ServerVersion.getVersion(nmsVersion);
             serverSoftware = ServerSoftware.getServerSoftware();
@@ -82,11 +89,15 @@ static boolean isClassPresent(String clazz) {
         }
     }
 
+    static String getCraftBukkitPackage() {
+        return craftBukkitPackage;
+    }
+
     static String getNmsClass() {
         return nmsClass;
     }
 
-    public static String getNmsVersion() {
+    static String getNmsVersion() {
         return nmsVersion;
     }