If the debug level is >= 1: stacktrace

src/main/java/com/onarandombox/MultiverseCore/MultiverseCore.java

@@ -80,6 +80,7 @@ import com.onarandombox.MultiverseCore.utils.MVPlayerSession;
 import com.onarandombox.MultiverseCore.utils.SimpleBlockSafety;
 import com.onarandombox.MultiverseCore.utils.SimpleLocationManipulation;
 import com.onarandombox.MultiverseCore.utils.SimpleSafeTTeleporter;
+import com.onarandombox.MultiverseCore.utils.UnsafeCallWrapper;
 import com.onarandombox.MultiverseCore.utils.VaultHandler;
 import com.onarandombox.MultiverseCore.utils.WorldManager;
 import com.pneumaticraft.commandhandler.CommandHandler;
@@ -218,6 +219,7 @@ public class MultiverseCore extends JavaPlugin implements MVPlugin, Core {
     private BlockSafety blockSafety;
     private LocationManipulation locationManipulation;
     private SafeTTeleporter safeTTeleporter;
+    private UnsafeCallWrapper unsafeCallWrapper;
 
     private File serverFolder = new File(System.getProperty("user.dir"));
 
@@ -238,6 +240,7 @@ public class MultiverseCore extends JavaPlugin implements MVPlugin, Core {
         this.locationManipulation = new SimpleLocationManipulation();
         // Setup our SafeTTeleporter
         this.safeTTeleporter = new SimpleSafeTTeleporter(this);
+        this.unsafeCallWrapper = new UnsafeCallWrapper(this);
     }
 
     /**
@@ -1285,4 +1288,8 @@ public class MultiverseCore extends JavaPlugin implements MVPlugin, Core {
     public Buscript getScriptAPI() {
         return buscript;
     }
+
+    public UnsafeCallWrapper getUnsafeCallWrapper() {
+        return this.unsafeCallWrapper;
+    }
 }

src/main/java/com/onarandombox/MultiverseCore/utils/UnsafeCallWrapper.java

@@ -1,15 +1,18 @@
 package com.onarandombox.MultiverseCore.utils;
 
 import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.api.Core;
 
 import java.util.concurrent.Callable;
 
 /**
  * Wraps calls that could result in exceptions that are not Multiverse's fault.
  */
-public final class UnsafeCallWrapper {
-    private UnsafeCallWrapper() {
-        throw new UnsupportedOperationException();
+public class UnsafeCallWrapper {
+    private final Core core;
+
+    public UnsafeCallWrapper(Core core) {
+        this.core = core;
     }
 
     /**
@@ -23,7 +26,7 @@ public final class UnsafeCallWrapper {
      * @param <T> The type of the return value.
      * @return The return value or null if the call failed.
      */
-    public static <T> T wrap(Callable<T> callable, String plugin, String action, Object... formatArgs) {
+    public <T> T wrap(Callable<T> callable, String plugin, String action, Object... formatArgs) {
         try {
             // We're ready to catch you! JUMP!
             return callable.call();
@@ -31,8 +34,10 @@ public final class UnsafeCallWrapper {
             Object[] actualFormatArgs = new Object[formatArgs.length + 1];
             System.arraycopy(formatArgs, 0, actualFormatArgs, 0, formatArgs.length);
             actualFormatArgs[formatArgs.length] = t;
-            Logging.warning(action, actualFormatArgs);
+                Logging.warning(action, actualFormatArgs);
             Logging.warning("This is a bug in %s, NOT a bug in Multiverse!", plugin);
+            if (core.getMVConfig().getGlobalDebug() >= 1)
+                t.printStackTrace();
             return null;
         }
     }

src/main/java/com/onarandombox/MultiverseCore/utils/WorldManager.java

@@ -251,7 +251,7 @@ public class WorldManager implements MVWorldManager {
         if (myPlugin == null) {
             return null;
         } else {
-            return UnsafeCallWrapper.wrap(new Callable<ChunkGenerator>() {
+            return plugin.getUnsafeCallWrapper().wrap(new Callable<ChunkGenerator>() {
                 @Override
                 public ChunkGenerator call() throws Exception {
                     return myPlugin.getDefaultWorldGenerator(worldName, generatorID);
@@ -379,7 +379,7 @@ public class WorldManager implements MVWorldManager {
 
         boolean generatorSuccess = true;
         if ((world.getGenerator() != null) && (!world.getGenerator().equals("null")))
-            generatorSuccess = null != UnsafeCallWrapper.wrap(new Callable<Object>() {
+            generatorSuccess = null != plugin.getUnsafeCallWrapper().wrap(new Callable<Object>() {
                 @Override
                 public Object call() throws Exception {
                     creator.generator(world.getGenerator());