diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitEditSessionWrapper_0.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitEditSessionWrapper_0.java
index 4a98c616..d3d31093 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitEditSessionWrapper_0.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitEditSessionWrapper_0.java
@@ -22,12 +22,12 @@ public class BukkitEditSessionWrapper_0 extends EditSessionWrapper {
     }
 
     @Override
-    public Extent getHistoryExtent(String world, FaweLimit limit, Extent parent, FaweChangeSet set, FaweQueue queue, FawePlayer<?> player) {
+    public Extent getHistoryExtent(EditSession session, FaweLimit limit, Extent parent, FaweChangeSet set, FaweQueue queue, FawePlayer<?> player) {
         if (this.hook != null) {
             // If we are doing logging, return a custom logging extent
             return this.hook.getLoggingExtent(parent, set, player);
         }
         // Otherwise return the normal history extent
-        return super.getHistoryExtent(world, limit, parent, set, queue, player);
+        return super.getHistoryExtent(session, limit, parent, set, queue, player);
     }
 }
diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue_1_8.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue_1_8.java
index 88dab5f5..0015a4eb 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue_1_8.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue_1_8.java
@@ -7,6 +7,7 @@ import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.IntegerPair;
+import com.boydti.fawe.object.exception.FaweException;
 import com.boydti.fawe.util.MemUtil;
 import com.boydti.fawe.util.ReflectionUtils.RefClass;
 import com.boydti.fawe.util.ReflectionUtils.RefConstructor;
@@ -120,7 +121,7 @@ public class BukkitQueue_1_8 extends BukkitQueue_0 {
     private LinkedBlockingDeque<IntegerPair> loadQueue = new LinkedBlockingDeque<>();
 
     @Override
-    public int getCombinedId4Data(int x, int y, int z) {
+    public int getCombinedId4Data(int x, int y, int z) throws FaweException.FaweChunkLoadException {
         if (y < 0 || y > 255) {
             return 0;
         }
@@ -147,7 +148,7 @@ public class BukkitQueue_1_8 extends BukkitQueue_0 {
                         }
                     }
                     if (!bukkitWorld.isChunkLoaded(cx, cz)) {
-                        return 0;
+                        throw new FaweException.FaweChunkLoadException();
                     }
                 } else {
                     return 0;
diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9.java
index dbb26611..96d40e28 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9.java
@@ -8,6 +8,7 @@ import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.IntegerPair;
 import com.boydti.fawe.object.PseudoRandom;
+import com.boydti.fawe.object.exception.FaweException;
 import com.boydti.fawe.util.MemUtil;
 import com.boydti.fawe.util.ReflectionUtils.RefClass;
 import com.boydti.fawe.util.ReflectionUtils.RefConstructor;
@@ -110,52 +111,46 @@ public class BukkitQueue_1_9 extends BukkitQueue_0 {
     private LinkedBlockingDeque<IntegerPair> loadQueue = new LinkedBlockingDeque<>();
 
     @Override
-    public int getCombinedId4Data(int x, int y, int z) {
+    public int getCombinedId4Data(int x, int y, int z)  throws FaweException.FaweChunkLoadException {
         if (y < 0 || y > 255) {
             return 0;
         }
-        try {
-            int cx = x >> 4;
-            int cz = z >> 4;
-            int cy = y >> 4;
-            if (cx != lcx || cz != lcz) {
-                if (bukkitWorld == null) {
-                    bukkitWorld = Bukkit.getServer().getWorld(world);
-                }
-                lcx = cx;
-                lcz = cz;
-                if (!bukkitWorld.isChunkLoaded(cx, cz)) {
-                    boolean sync = Thread.currentThread() == Fawe.get().getMainThread();
-                    if (sync) {
-                        bukkitWorld.loadChunk(cx, cz, true);
-                    } else if (Settings.CHUNK_WAIT > 0) {
-                        synchronized (loadQueue) {
-                            loadQueue.add(new IntegerPair(cx, cz));
-                            try {
-                                loadQueue.wait(Settings.CHUNK_WAIT);
-                            } catch (InterruptedException e) {
-                                e.printStackTrace();
-                            }
+        int cx = x >> 4;
+        int cz = z >> 4;
+        int cy = y >> 4;
+        if (cx != lcx || cz != lcz) {
+            if (bukkitWorld == null) {
+                bukkitWorld = Bukkit.getServer().getWorld(world);
+            }
+            lcx = cx;
+            lcz = cz;
+            if (!bukkitWorld.isChunkLoaded(cx, cz)) {
+                boolean sync = Thread.currentThread() == Fawe.get().getMainThread();
+                if (sync) {
+                    bukkitWorld.loadChunk(cx, cz, true);
+                } else if (Settings.CHUNK_WAIT > 0) {
+                    synchronized (loadQueue) {
+                        loadQueue.add(new IntegerPair(cx, cz));
+                        try {
+                            loadQueue.wait(Settings.CHUNK_WAIT);
+                        } catch (InterruptedException e) {
+                            e.printStackTrace();
                         }
-                        if (!bukkitWorld.isChunkLoaded(cx, cz)) {
-                            return 0;
-                        }
-                    } else {
-                        return 0;
                     }
+                    if (!bukkitWorld.isChunkLoaded(cx, cz)) {
+                        throw new FaweException.FaweChunkLoadException();
+                    }
+                } else {
+                    return 0;
                 }
-                lc = methodGetType.of(methodGetHandleChunk.of(bukkitWorld.getChunkAt(cx, cz)).call());
             }
-            if (lc == null) {
-                return 0;
-            }
-            int combined = (int) methodGetCombinedId.call(lc.call(x & 15, y, z & 15));
-            return ((combined & 4095) << 4) + (combined >> 12);
+            lc = methodGetType.of(methodGetHandleChunk.of(bukkitWorld.getChunkAt(cx, cz)).call());
         }
-        catch (Throwable e) {
-            e.printStackTrace();
+        if (lc == null) {
+            return 0;
         }
-        return 0;
+        int combined = (int) methodGetCombinedId.call(lc.call(x & 15, y, z & 15));
+        return ((combined & 4095) << 4) + (combined >> 12);
     }
 
     @Override
diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java
index 23315807..0b731c1a 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java
@@ -9,6 +9,7 @@ import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.IntegerPair;
 import com.boydti.fawe.object.PseudoRandom;
+import com.boydti.fawe.object.exception.FaweException;
 import com.boydti.fawe.util.MemUtil;
 import com.boydti.fawe.util.TaskManager;
 import com.sk89q.worldedit.LocalSession;
@@ -78,67 +79,61 @@ public class BukkitQueue_1_9_R1 extends BukkitQueue_0 {
     private DataPaletteBlock lastSection;
 
     @Override
-    public int getCombinedId4Data(int x, int y, int z) {
+    public int getCombinedId4Data(int x, int y, int z) throws FaweException.FaweChunkLoadException {
         if (y < 0 || y > 255) {
             return 0;
         }
-        try {
-            int cx = x >> 4;
-            int cz = z >> 4;
-            int cy = y >> 4;
-            if (cx != lcx || cz != lcz) {
-                if (bukkitWorld == null) {
-                    bukkitWorld = Bukkit.getServer().getWorld(world);
-                }
-                lcx = cx;
-                lcz = cz;
-                if (!bukkitWorld.isChunkLoaded(cx, cz)) {
-                    boolean sync = Thread.currentThread() == Fawe.get().getMainThread();
-                    if (sync) {
-                        bukkitWorld.loadChunk(cx, cz, true);
-                    } else if (Settings.CHUNK_WAIT > 0) {
-                        synchronized (loadQueue) {
-                            loadQueue.add(new IntegerPair(cx, cz));
-                            try {
-                                loadQueue.wait(Settings.CHUNK_WAIT);
-                            } catch (InterruptedException e) {
-                                e.printStackTrace();
-                            }
+        int cx = x >> 4;
+        int cz = z >> 4;
+        int cy = y >> 4;
+        if (cx != lcx || cz != lcz) {
+            if (bukkitWorld == null) {
+                bukkitWorld = Bukkit.getServer().getWorld(world);
+            }
+            lcx = cx;
+            lcz = cz;
+            if (!bukkitWorld.isChunkLoaded(cx, cz)) {
+                boolean sync = Thread.currentThread() == Fawe.get().getMainThread();
+                if (sync) {
+                    bukkitWorld.loadChunk(cx, cz, true);
+                } else if (Settings.CHUNK_WAIT > 0) {
+                    synchronized (loadQueue) {
+                        loadQueue.add(new IntegerPair(cx, cz));
+                        try {
+                            loadQueue.wait(Settings.CHUNK_WAIT);
+                        } catch (InterruptedException e) {
+                            e.printStackTrace();
                         }
-                        if (!bukkitWorld.isChunkLoaded(cx, cz)) {
-                            return 0;
-                        }
-                    } else {
-                        return 0;
                     }
-                }
-                CraftChunk chunk = (CraftChunk) bukkitWorld.getChunkAt(cx, cz);
-                chunkSections = chunk.getHandle().getSections();
-                ChunkSection nibble = chunkSections[cy];
-                lastSection = nibble != null ? nibble.getBlocks() : null;
-            } else if (cy != lcy) {
-                if (chunkSections == null) {
+                    if (!bukkitWorld.isChunkLoaded(cx, cz)) {
+                        throw new FaweException.FaweChunkLoadException();
+                    }
+                } else {
                     return 0;
                 }
-                ChunkSection nibble = chunkSections[cy];
-                lastSection = nibble != null ? nibble.getBlocks() : null;
             }
-            if (lastSection == null) {
+            CraftChunk chunk = (CraftChunk) bukkitWorld.getChunkAt(cx, cz);
+            chunkSections = chunk.getHandle().getSections();
+            ChunkSection nibble = chunkSections[cy];
+            lastSection = nibble != null ? nibble.getBlocks() : null;
+        } else if (cy != lcy) {
+            if (chunkSections == null) {
                 return 0;
             }
-            IBlockData ibd = lastSection.a(x & 15, y & 15, z & 15);
-            Block block = ibd.getBlock();
-            int id = Block.getId(block);
-            if (FaweCache.hasData(id)) {
-                return (id << 4) + block.toLegacyData(ibd);
-            } else {
-                return id << 4;
-            }
+            ChunkSection nibble = chunkSections[cy];
+            lastSection = nibble != null ? nibble.getBlocks() : null;
         }
-        catch (Throwable e) {
-            e.printStackTrace();
+        if (lastSection == null) {
+            return 0;
+        }
+        IBlockData ibd = lastSection.a(x & 15, y & 15, z & 15);
+        Block block = ibd.getBlock();
+        int id = Block.getId(block);
+        if (FaweCache.hasData(id)) {
+            return (id << 4) + block.toLegacyData(ibd);
+        } else {
+            return id << 4;
         }
-        return 0;
     }
 
     @Override
diff --git a/core/src/main/java/com/boydti/fawe/config/BBC.java b/core/src/main/java/com/boydti/fawe/config/BBC.java
index f594bbbf..9f275ff6 100644
--- a/core/src/main/java/com/boydti/fawe/config/BBC.java
+++ b/core/src/main/java/com/boydti/fawe/config/BBC.java
@@ -49,6 +49,7 @@ public enum BBC {
     WORLDEDIT_CANCEL_REASON_MAX_ENTITIES("Too many entities", "Cancel"),
     WORLDEDIT_CANCEL_REASON_MAX_ITERATIONS("Max iterations", "Cancel"),
     WORLDEDIT_CANCEL_REASON_MAX_FAILS("Outside allowed region", "Cancel"),
+    WORLDEDIT_FAILED_LOAD_CHUNK("&cFailed to load chunk: &7%s0;%s1&c. Try increasing chunk-wait.", "Cancel"),
 
     WORLDEDIT_OOM_ADMIN("&cPossible options:\n&8 - &7//fast\n&8 - &7Do smaller edits\n&8 - &7Allocate more memory\n&8 - &7Disable this safeguard", "Info"),
     NOT_PLAYER("&cYou must be a player to perform this action!", "Error"),
diff --git a/core/src/main/java/com/boydti/fawe/object/EditSessionWrapper.java b/core/src/main/java/com/boydti/fawe/object/EditSessionWrapper.java
index 900e6e7e..20fbdcce 100644
--- a/core/src/main/java/com/boydti/fawe/object/EditSessionWrapper.java
+++ b/core/src/main/java/com/boydti/fawe/object/EditSessionWrapper.java
@@ -27,7 +27,7 @@ public class EditSessionWrapper {
         return minY;
     }
 
-    public Extent getHistoryExtent(String world, FaweLimit limit, Extent parent, FaweChangeSet set, FaweQueue queue, FawePlayer<?> player) {
-        return new HistoryExtent(world, limit, parent, set, queue);
+    public Extent getHistoryExtent(EditSession session, FaweLimit limit, Extent parent, FaweChangeSet set, FaweQueue queue, FawePlayer<?> player) {
+        return new HistoryExtent(session, limit, parent, set, queue);
     }
 }
diff --git a/core/src/main/java/com/boydti/fawe/object/HistoryExtent.java b/core/src/main/java/com/boydti/fawe/object/HistoryExtent.java
index dc0ba86c..2371336b 100644
--- a/core/src/main/java/com/boydti/fawe/object/HistoryExtent.java
+++ b/core/src/main/java/com/boydti/fawe/object/HistoryExtent.java
@@ -3,6 +3,7 @@ package com.boydti.fawe.object;
 import com.boydti.fawe.FaweCache;
 import com.boydti.fawe.object.changeset.FaweChangeSet;
 import com.boydti.fawe.util.FaweQueue;
+import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.blocks.BaseBlock;
@@ -30,6 +31,7 @@ public class HistoryExtent extends AbstractDelegateExtent {
     private final com.boydti.fawe.object.changeset.FaweChangeSet changeSet;
     private final FaweQueue queue;
     private final FaweLimit limit;
+    private final EditSession session;
 
     /**
      * Create a new instance.
@@ -37,12 +39,13 @@ public class HistoryExtent extends AbstractDelegateExtent {
      * @param extent the extent
      * @param changeSet the change set
      */
-    public HistoryExtent(final String world, FaweLimit limit, final Extent extent, final FaweChangeSet changeSet, FaweQueue queue) {
+    public HistoryExtent(final EditSession session, FaweLimit limit, final Extent extent, final FaweChangeSet changeSet, FaweQueue queue) {
         super(extent);
         this.limit = limit;
         this.queue = queue;
         checkNotNull(changeSet);
         this.changeSet = changeSet;
+        this.session = session;
     }
 
     @Override
@@ -51,7 +54,7 @@ public class HistoryExtent extends AbstractDelegateExtent {
             int x = location.getBlockX();
             int y = location.getBlockY();
             int z = location.getBlockZ();
-            int combined = queue.getCombinedId4Data(x, y, z);
+            int combined = queue.getCombinedId4DataDebug(x, y, z, 0, session);
             int id = (combined >> 4);
             if (id == block.getId()) {
                 if (!FaweCache.hasData(id)) {
diff --git a/core/src/main/java/com/boydti/fawe/object/exception/FaweException.java b/core/src/main/java/com/boydti/fawe/object/exception/FaweException.java
index dd318011..81b0badf 100644
--- a/core/src/main/java/com/boydti/fawe/object/exception/FaweException.java
+++ b/core/src/main/java/com/boydti/fawe/object/exception/FaweException.java
@@ -24,4 +24,10 @@ public class FaweException extends RuntimeException {
         }
         return get(cause);
     }
+
+    public static class FaweChunkLoadException extends FaweException {
+        public FaweChunkLoadException() {
+            super(BBC.WORLDEDIT_FAILED_LOAD_CHUNK);
+        }
+    }
 }
diff --git a/core/src/main/java/com/boydti/fawe/util/FaweQueue.java b/core/src/main/java/com/boydti/fawe/util/FaweQueue.java
index 9e3e62b4..270003d7 100644
--- a/core/src/main/java/com/boydti/fawe/util/FaweQueue.java
+++ b/core/src/main/java/com/boydti/fawe/util/FaweQueue.java
@@ -3,6 +3,8 @@ package com.boydti.fawe.util;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.object.FaweChunk;
+import com.boydti.fawe.object.exception.FaweException;
+import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.world.biome.BaseBiome;
 
 public abstract class FaweQueue {
@@ -53,7 +55,24 @@ public abstract class FaweQueue {
     
     public abstract void addTask(int x, int z, Runnable runnable);
 
-    public abstract int getCombinedId4Data(int x, int y, int z);
+    public abstract int getCombinedId4Data(int x, int y, int z) throws FaweException.FaweChunkLoadException;
+
+    public int getCombinedId4Data(int x, int y, int z, int def) {
+        try {
+            return getCombinedId4Data(x, y, z);
+        } catch (FaweException ignore) {
+            return def;
+        }
+    }
+
+    public int getCombinedId4DataDebug(int x, int y, int z, int def, EditSession session) {
+        try {
+            return getCombinedId4Data(x, y, z);
+        } catch (FaweException ignore) {
+            session.debug(BBC.WORLDEDIT_FAILED_LOAD_CHUNK.format(x >> 4, z >> 4));
+            return def;
+        }
+    }
 
     public abstract int size();
 
diff --git a/core/src/main/java/com/boydti/fawe/wrappers/WorldWrapper.java b/core/src/main/java/com/boydti/fawe/wrappers/WorldWrapper.java
index 40791b42..b0fb0a7d 100644
--- a/core/src/main/java/com/boydti/fawe/wrappers/WorldWrapper.java
+++ b/core/src/main/java/com/boydti/fawe/wrappers/WorldWrapper.java
@@ -178,7 +178,7 @@ public class WorldWrapper extends AbstractWorld {
     }
 
     @Override
-    public boolean regenerate(final Region region, EditSession session) {
+    public boolean regenerate(final Region region, final EditSession session) {
         final FaweQueue queue = session.getQueue();
         final FaweChangeSet fcs = (FaweChangeSet) session.getChangeSet();
         final FaweExtent fe = session.getFaweExtent();
@@ -208,7 +208,7 @@ public class WorldWrapper extends AbstractWorld {
                             for (int z = 0; z < 16; z++) {
                                 int zz = z + bz;
                                 for (int y = 0; y < getMaxY() + 1; y++) {
-                                    int from = queue.getCombinedId4Data(xx, y, zz);
+                                    int from = queue.getCombinedId4DataDebug(xx, y, zz, 0, session);
                                     if (!FaweCache.hasNBT(from >> 4)) {
                                         fcs.add(xx, y, zz, from, 0);
                                     } else {
diff --git a/core/src/main/java/com/sk89q/worldedit/EditSession.java b/core/src/main/java/com/sk89q/worldedit/EditSession.java
index 1e7e74cd..13e58aa5 100644
--- a/core/src/main/java/com/sk89q/worldedit/EditSession.java
+++ b/core/src/main/java/com/sk89q/worldedit/EditSession.java
@@ -159,6 +159,7 @@ public class EditSession implements Extent {
     }
 
     private World world;
+    private Actor actor;
     private FaweChangeSet changeSet;
     private final EditSessionWrapper wrapper;
     private FaweExtent faweExtent;
@@ -231,8 +232,7 @@ public class EditSession implements Extent {
             this.wrapper = Fawe.imp().getEditSessionWrapper(this);
             return;
         }
-        final Actor actor = event.getActor();
-
+        this.actor = event.getActor();
         this.queue = SetQueue.IMP.getNewQueue(world.getName(), true);
         this.world = (world = new WorldWrapper((AbstractWorld) world));
         this.wrapper = Fawe.imp().getEditSessionWrapper(this);
@@ -316,7 +316,7 @@ public class EditSession implements Extent {
         Extent wrapped;
         extent = wrapped = this.wrapExtent(extent, eventBus, event, Stage.BEFORE_CHANGE);
         extent = this.wrapExtent(extent, eventBus, event, Stage.BEFORE_REORDER);
-        extent = this.wrapper.getHistoryExtent(world.getName(), limit, extent, this.changeSet, queue, fp);
+        extent = this.wrapper.getHistoryExtent(this, limit, extent, this.changeSet, queue, fp);
         final Player skp = (Player) actor;
         final int item = skp.getItemInHand();
         boolean hasMask = session.getMask() != null;
@@ -340,6 +340,12 @@ public class EditSession implements Extent {
         return;
     }
 
+    public void debug(String message) {
+        if (actor != null && message != null && message.length() > 0) {
+            actor.print(BBC.PREFIX.s() + " " + message);
+        }
+    }
+
     public FaweQueue getQueue() {
         return queue;
     }
@@ -569,7 +575,7 @@ public class EditSession implements Extent {
         if (limit != null && limit.MAX_CHECKS-- < 0) {
             throw new FaweException(BBC.WORLDEDIT_CANCEL_REASON_MAX_CHECKS);
         }
-        int combinedId4Data = queue.getCombinedId4Data(x, y, z);
+        int combinedId4Data = queue.getCombinedId4DataDebug(x, y, z, 0, this);
         if (!FaweCache.hasNBT(combinedId4Data >> 4)) {
             return FaweCache.CACHE_BLOCK[combinedId4Data];
         }
@@ -597,7 +603,7 @@ public class EditSession implements Extent {
         if (limit != null && limit.MAX_CHECKS-- < 0) {
             throw new FaweException(BBC.WORLDEDIT_CANCEL_REASON_MAX_CHECKS);
         }
-        int combinedId4Data = queue.getCombinedId4Data(position.getBlockX(), position.getBlockY(), position.getBlockZ());
+        int combinedId4Data = queue.getCombinedId4DataDebug(position.getBlockX(), position.getBlockY(), position.getBlockZ(), 0, this);
         return combinedId4Data >> 4;
     }
 
@@ -613,7 +619,7 @@ public class EditSession implements Extent {
         if (limit != null && limit.MAX_CHECKS-- < 0) {
             throw new FaweException(BBC.WORLDEDIT_CANCEL_REASON_MAX_CHECKS);
         }
-        int combinedId4Data = queue.getCombinedId4Data(position.getBlockX(), position.getBlockY(), position.getBlockZ());
+        int combinedId4Data = queue.getCombinedId4DataDebug(position.getBlockX(), position.getBlockY(), position.getBlockZ(), 0, this);
         return combinedId4Data & 0xF;
     }
 
@@ -2203,7 +2209,7 @@ public class EditSession implements Extent {
             expression.evaluate(scaled.getX(), scaled.getY(), scaled.getZ());
             final BlockVector sourcePosition = environment.toWorld(x.getValue(), y.getValue(), z.getValue());
             // read block from world
-            BaseBlock material = FaweCache.CACHE_BLOCK[this.queue.getCombinedId4Data(sourcePosition.getBlockX(), sourcePosition.getBlockY(), sourcePosition.getBlockZ())];
+            BaseBlock material = FaweCache.CACHE_BLOCK[this.queue.getCombinedId4DataDebug(sourcePosition.getBlockX(), sourcePosition.getBlockY(), sourcePosition.getBlockZ(), 0, this)];
             // queue operation
             if (this.setBlock(position, material)) {
                 ++affected;
diff --git a/forge/src/main/java/com/boydti/fawe/forge/v1_8/SpongeQueue_1_8.java b/forge/src/main/java/com/boydti/fawe/forge/v1_8/SpongeQueue_1_8.java
index 0bfada11..33f1f399 100644
--- a/forge/src/main/java/com/boydti/fawe/forge/v1_8/SpongeQueue_1_8.java
+++ b/forge/src/main/java/com/boydti/fawe/forge/v1_8/SpongeQueue_1_8.java
@@ -8,6 +8,7 @@ import com.boydti.fawe.forge.v0.SpongeQueue_0;
 import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.IntegerPair;
 import com.boydti.fawe.object.PseudoRandom;
+import com.boydti.fawe.object.exception.FaweException;
 import com.boydti.fawe.util.TaskManager;
 import com.flowpowered.math.vector.Vector3i;
 import java.lang.reflect.Field;
@@ -63,7 +64,7 @@ public class SpongeQueue_1_8 extends SpongeQueue_0 {
     private LinkedBlockingDeque<IntegerPair> loadQueue = new LinkedBlockingDeque<>();
 
     @Override
-    public int getCombinedId4Data(int x, int y, int z) {
+    public int getCombinedId4Data(int x, int y, int z) throws FaweException.FaweChunkLoadException {
         if (y < 0 || y > 255) {
             return 0;
         }
@@ -92,7 +93,7 @@ public class SpongeQueue_1_8 extends SpongeQueue_0 {
                     }
                     chunk = spongeWorld.getChunk(cx, 0, cz).orElse(null);
                     if (chunk == null || !chunk.isLoaded()) {
-                        return 0;
+                        throw new FaweException.FaweChunkLoadException();
                     }
                 } else {
                     return 0;