diff --git a/common/src/main/java/com/seibel/lod/common/wrappers/VersionConstants.java b/common/src/main/java/com/seibel/lod/common/wrappers/VersionConstants.java
index 6f1056619..46442a340 100644
--- a/common/src/main/java/com/seibel/lod/common/wrappers/VersionConstants.java
+++ b/common/src/main/java/com/seibel/lod/common/wrappers/VersionConstants.java
@@ -41,4 +41,9 @@ public class VersionConstants implements IVersionConstants {
         }
          */
     }
+
+    @Override
+    public int getWorldGenerationCountPerThread() {
+        return 1;
+    }
 }
\ No newline at end of file
diff --git a/common/src/main/java/com/seibel/lod/common/wrappers/config/ConfigGui.java b/common/src/main/java/com/seibel/lod/common/wrappers/config/ConfigGui.java
index 77b31b88e..3ad2ae36c 100644
--- a/common/src/main/java/com/seibel/lod/common/wrappers/config/ConfigGui.java
+++ b/common/src/main/java/com/seibel/lod/common/wrappers/config/ConfigGui.java
@@ -5,7 +5,6 @@ import com.moandjiezana.toml.Toml;
 // TomlWriter is threadsave while Writer is not
 import com.moandjiezana.toml.TomlWriter;
 import com.mojang.blaze3d.vertex.PoseStack;
-import com.seibel.lod.common.Config;
 import com.seibel.lod.core.ModInfo;
 import net.minecraft.ChatFormatting;
 import net.minecraft.client.Minecraft;
@@ -32,6 +31,7 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.*;
@@ -124,6 +124,8 @@ public abstract class ConfigGui {
 
     private static final List<EntryInfo> entries = new ArrayList<>();
 
+    private static TomlWriter tomlWriter = new TomlWriter();
+
     private static class ConfigScreenConfigs {
         // This contains all the configs for the configs
         public static final int SpaceFromRightScreen = 10;
@@ -285,7 +287,7 @@ public abstract class ConfigGui {
         try {
             if (!Files.exists(path))
                 Files.createFile(path);
-            new TomlWriter().write(configClass.get(modid).getDeclaredConstructor().newInstance(), path.toFile());
+            tomlWriter.write(configClass.get(modid).getDeclaredConstructor().newInstance());
         } catch (Exception e) {
             e.printStackTrace();
         }
@@ -401,7 +403,7 @@ public abstract class ConfigGui {
                         this.list.addButton(widget, resetButton, null, name);
                     } else if (info.button) {
                         Button widget = new Button(this.width / 2 - info.width, this.height - 28, info.width*2, 20, name, (button -> {
-                            Objects.requireNonNull(minecraft).setScreen(ConfigGui.getScreen(this, ModInfo.ID, info.gotoScreen));
+                            Objects.requireNonNull(minecraft).setScreen(ConfigGui.getScreen(this, modid, info.gotoScreen));
                         }));
                         this.list.addButton(widget, null, null, null);
                     } else {
diff --git a/common/src/main/java/com/seibel/lod/common/wrappers/world/WorldWrapper.java b/common/src/main/java/com/seibel/lod/common/wrappers/world/WorldWrapper.java
index bd1fd38af..49eb24800 100644
--- a/common/src/main/java/com/seibel/lod/common/wrappers/world/WorldWrapper.java
+++ b/common/src/main/java/com/seibel/lod/common/wrappers/world/WorldWrapper.java
@@ -137,6 +137,11 @@ public class WorldWrapper implements IWorldWrapper
         return world.getHeight();
     }
 
+    @Override
+    public short getMinHeight() {
+        return (short) world.getMinBuildHeight();
+    }
+
     /** @throws UnsupportedOperationException if the WorldWrapper isn't for a ServerWorld */
     @Override
     public File getSaveFolder() throws UnsupportedOperationException
diff --git a/core b/core
index 244ead945..4229ed75a 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 244ead9451a48fc3ed7a0005321fd207af9a32c0
+Subproject commit 4229ed75ae766df939b8f5fe5fdcb948c487c442