diff --git a/src/main/java/org/dynmap/bukkit/BukkitVersionHelper.java b/src/main/java/org/dynmap/bukkit/BukkitVersionHelper.java
index c6a2f421..1d2b4672 100644
--- a/src/main/java/org/dynmap/bukkit/BukkitVersionHelper.java
+++ b/src/main/java/org/dynmap/bukkit/BukkitVersionHelper.java
@@ -25,6 +25,10 @@ public abstract class BukkitVersionHelper {
                 Log.info("Loader version helper for MCPC");
                 helper = new BukkitVersionHelperMCPC();
             }
+            else if(Bukkit.getServer().getVersion().contains("BukkitForge")) {
+                Log.info("Loader version helper for BukkitForge");
+                helper = new BukkitVersionHelperBukkitForge();
+            }
             else {
                 helper = new BukkitVersionHelperCB();
             }
diff --git a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperBukkitForge.java b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperBukkitForge.java
new file mode 100644
index 00000000..598d71ad
--- /dev/null
+++ b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperBukkitForge.java
@@ -0,0 +1,99 @@
+package org.dynmap.bukkit;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Chunk;
+import org.bukkit.ChunkSnapshot;
+import org.bukkit.Server;
+import org.bukkit.World;
+import org.dynmap.Log;
+
+/**
+ * Helper for isolation of bukkit version specific issues
+ */
+public class BukkitVersionHelperBukkitForge extends BukkitVersionHelperGeneric {
+    BukkitVersionHelperBukkitForge() {
+    }
+    @Override
+    protected String getNMSPackage() {
+        return "";
+    }
+    @Override
+    protected void loadNMS() {
+        /* biomebase */
+        biomebase = getNMSClass("yy");
+        biomebasearray = getNMSClass("[Lyy;");
+        /* world */
+        nmsworld = getNMSClass("in");
+        /* chunk */
+        chunkprovserver = getNMSClass("im");
+        nmschunk = getNMSClass("zz");
+        /* nbt */
+        nbttagcompound = getNMSClass("bq");
+        nbttagbyte = getNMSClass("bp");
+        nbttagshort = getNMSClass("cb");
+        nbttagint = getNMSClass("bx");
+        nbttaglong = getNMSClass("bz");
+        nbttagfloat = getNMSClass("bv");
+        nbttagdouble = getNMSClass("bt");
+        nbttagbytearray = getNMSClass("bo");
+        nbttagstring = getNMSClass("cc");
+        nbttagintarray = getNMSClass("bw");
+        /* tileentity */
+        nms_tileentity = getNMSClass("any");
+        
+        /** Set up NMS fields **/
+        /* biomebase */
+        biomebaselist = getField(biomebase, new String[] { "a" }, biomebasearray);
+        biomebasetemp = getField(biomebase, new String[] { "F" }, float.class);
+        biomebasehumi = getField(biomebase, new String[] { "G" }, float.class);
+        biomebaseidstring = getField(biomebase, new String[] { "y" }, String.class);
+        biomebaseid = getField(biomebase, new String[] { "N" }, int.class);
+        /* chunk */
+        nmsw_chunkproviderserver = getField(nmsworld, new String[] { "b" }, chunkprovserver);
+        cps_unloadqueue = getFieldNoFail(chunkprovserver, new String[] { "b" }, longhashset);
+        if(cps_unloadqueue == null) {
+            Log.info("Unload queue not found - default to unload all chunks");
+        }
+        nmsc_removeentities = getMethod(nmschunk, new String[] { "d" }, new Class[0]);
+        nmsc_tileentities = getField(nmschunk, new String[] { "i" }, Map.class);
+        /* nbt */
+        compound_get = getMethod(nbttagcompound, new String[] { "a" }, new Class[] { String.class });
+        nbttagbyte_val = getField(nbttagbyte, new String[] { "a" }, byte.class);
+        nbttagshort_val = getField(nbttagshort, new String[] { "a" }, short.class);
+        nbttagint_val = getField(nbttagint, new String[] { "a" }, int.class);
+        nbttaglong_val = getField(nbttaglong, new String[] { "a" }, long.class);
+        nbttagfloat_val = getField(nbttagfloat, new String[] { "a" }, float.class);
+        nbttagdouble_val = getField(nbttagdouble, new String[] { "a" }, double.class);
+        nbttagbytearray_val = getField(nbttagbytearray, new String[] { "a" }, byte[].class);
+        nbttagstring_val = getField(nbttagstring, new String[] { "a" }, String.class);
+        nbttagintarray_val = getField(nbttagintarray, new String[] { "a" }, int[].class);
+        /* tileentity */
+        nmst_readnbt = getMethod(nms_tileentity, new String[] { "b" }, new Class[] { nbttagcompound });
+        nmst_x = getField(nms_tileentity, new String[] { "l" }, int.class);
+        nmst_y = getField(nms_tileentity, new String[] { "m" }, int.class);
+        nmst_z = getField(nms_tileentity, new String[] { "n" }, int.class);
+    }
+    
+    private static long chunkXZ2Int(int par0, int par1)
+    {
+        return (long)par0 & 4294967295L | ((long)par1 & 4294967295L) << 32;
+    }
+
+    /* For testing unload queue for presence of givne chunk */
+    @Override
+    public boolean isInUnloadQueue(Object unloadqueue, int x, int z) {
+        if(unloadqueue != null) {
+            Set uq = (Set)unloadqueue;
+            return uq.contains(Long.valueOf(chunkXZ2Int(x, z)));
+        }
+        return true;
+    }
+
+}
diff --git a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperCB.java b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperCB.java
index 6a0e8d60..c2f2b4aa 100644
--- a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperCB.java
+++ b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperCB.java
@@ -46,6 +46,16 @@ public class BukkitVersionHelperCB extends BukkitVersionHelperGeneric {
         nmsworld = getNMSClass("net.minecraft.server.WorldServer");
         chunkprovserver = getNMSClass("net.minecraft.server.ChunkProviderServer");
         nmsw_chunkproviderserver = getField(nmsworld, new String[] { "chunkProviderServer" }, chunkprovserver);
+        
+        longhashset = getOBCClassNoFail("org.bukkit.craftbukkit.util.LongHashSet");
+        if(longhashset != null) {
+            lhs_containskey = getMethod(longhashset, new String[] { "contains" }, new Class[] { int.class, int.class });
+        }
+        else {
+            longhashset = getOBCClass("org.bukkit.craftbukkit.util.LongHashset");
+            lhs_containskey = getMethod(longhashset, new String[] { "containsKey" }, new Class[] { int.class, int.class });
+        }
+
         cps_unloadqueue = getFieldNoFail(chunkprovserver, new String[] { "unloadQueue" }, longhashset); 
         if(cps_unloadqueue == null) {
             Log.info("Unload queue not found - default to unload all chunks");
diff --git a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperGeneric.java b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperGeneric.java
index 10faa379..a5cafb33 100644
--- a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperGeneric.java
+++ b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperGeneric.java
@@ -92,14 +92,6 @@ public abstract class BukkitVersionHelperGeneric extends BukkitVersionHelper {
         /* Craftworld fields */
         craftworld = getOBCClass("org.bukkit.craftbukkit.CraftWorld");
         cw_gethandle = getMethod(craftworld, new String[] { "getHandle" }, new Class[0]);
-        longhashset = getOBCClassNoFail("org.bukkit.craftbukkit.util.LongHashSet");
-        if(longhashset != null) {
-            lhs_containskey = getMethod(longhashset, new String[] { "contains" }, new Class[] { int.class, int.class });
-        }
-        else {
-            longhashset = getOBCClass("org.bukkit.craftbukkit.util.LongHashset");
-            lhs_containskey = getMethod(longhashset, new String[] { "containsKey" }, new Class[] { int.class, int.class });
-        }
         /* CraftChunkSnapshot */
         craftchunksnapshot = getOBCClass("org.bukkit.craftbukkit.CraftChunkSnapshot");
         ccss_biome = getPrivateField(craftchunksnapshot, new String[] { "biome" }, biomebasearray);
diff --git a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperMCPC.java b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperMCPC.java
index 0068dee5..71b0d958 100644
--- a/src/main/java/org/dynmap/bukkit/BukkitVersionHelperMCPC.java
+++ b/src/main/java/org/dynmap/bukkit/BukkitVersionHelperMCPC.java
@@ -45,7 +45,17 @@ public class BukkitVersionHelperMCPC extends BukkitVersionHelperGeneric {
         nbttagintarray = getNMSClass("bw");
         /* tileentity */
         nms_tileentity = getNMSClass("any");
-        
+
+        /* Get unload queue classes */
+        longhashset = getOBCClassNoFail("org.bukkit.craftbukkit.util.LongHashSet");
+        if(longhashset != null) {
+            lhs_containskey = getMethod(longhashset, new String[] { "contains" }, new Class[] { int.class, int.class });
+        }
+        else {
+            longhashset = getOBCClass("org.bukkit.craftbukkit.util.LongHashset");
+            lhs_containskey = getMethod(longhashset, new String[] { "containsKey" }, new Class[] { int.class, int.class });
+        }
+
         /** Set up NMS fields **/
         /* biomebase */
         biomebaselist = getField(biomebase, new String[] { "a" }, biomebasearray);