diff --git a/plugin/src/main/java/com/denizenscript/denizen/objects/LocationTag.java b/plugin/src/main/java/com/denizenscript/denizen/objects/LocationTag.java
index 3d94dee238..db16972309 100644
--- a/plugin/src/main/java/com/denizenscript/denizen/objects/LocationTag.java
+++ b/plugin/src/main/java/com/denizenscript/denizen/objects/LocationTag.java
@@ -412,6 +412,28 @@ public Block getBlockForTag(Attribute attribute) {
         }
     }
 
+    public Material getBlockTypeForTag(Attribute attribute) {
+        NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+        try {
+            if (getWorld() == null) {
+                if (!attribute.hasAlternative()) {
+                    Debug.echoError("LocationTag trying to read block, but cannot because no world is specified.");
+                }
+                return null;
+            }
+            if (!isChunkLoaded()) {
+                if (!attribute.hasAlternative()) {
+                    Debug.echoError("LocationTag trying to read block, but cannot because the chunk is unloaded. Use the 'chunkload' command to ensure the chunk is loaded.");
+                }
+                return null;
+            }
+            return super.getBlock().getType();
+        }
+        finally {
+            NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+        }
+    }
+
     public static BlockState getBlockStateFor(Block block) {
         return block.getState();
     }
@@ -1260,12 +1282,18 @@ else if (getBlockForTag(attribute).getType() == Material.FLOWER_POT) {
             double nx = xzLen * Math.sin(-getYaw() * (Math.PI / 180));
             double ny = Math.sin(getPitch() * (Math.PI / 180));
             double nz = xzLen * Math.cos(getYaw() * (Math.PI / 180));
-            Location location = NMSHandler.getEntityHelper().getImpactNormal(this, new Vector(nx, -ny, nz), range);
-            if (location != null) {
-                return new LocationTag(location).getAttribute(attribute.fulfill(1));
+            try {
+                NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                Location location = NMSHandler.getEntityHelper().getImpactNormal(this, new Vector(nx, -ny, nz), range);
+                if (location != null) {
+                    return new LocationTag(location).getAttribute(attribute.fulfill(1));
+                }
+                else {
+                    return null;
+                }
             }
-            else {
-                return null;
+            finally {
+                NMSHandler.getChunkHelper().restoreServerThread(getWorld());
             }
         }
 
@@ -1285,12 +1313,18 @@ else if (getBlockForTag(attribute).getType() == Material.FLOWER_POT) {
             double nx = xzLen * Math.sin(-getYaw() * (Math.PI / 180));
             double ny = Math.sin(getPitch() * (Math.PI / 180));
             double nz = xzLen * Math.cos(getYaw() * (Math.PI / 180));
-            Location location = NMSHandler.getEntityHelper().rayTraceBlock(this, new Vector(nx, -ny, nz), range);
-            if (location != null) {
-                return new LocationTag(location).getBlockLocation().getAttribute(attribute.fulfill(1));
+            try {
+                NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                Location location = NMSHandler.getEntityHelper().rayTraceBlock(this, new Vector(nx, -ny, nz), range);
+                if (location != null) {
+                    return new LocationTag(location).getBlockLocation().getAttribute(attribute.fulfill(1));
+                }
+                else {
+                    return null;
+                }
             }
-            else {
-                return null;
+            finally {
+                NMSHandler.getChunkHelper().restoreServerThread(getWorld());
             }
         }
 
@@ -1310,12 +1344,18 @@ else if (getBlockForTag(attribute).getType() == Material.FLOWER_POT) {
             double nx = xzLen * Math.sin(-getYaw() * (Math.PI / 180));
             double ny = Math.sin(getPitch() * (Math.PI / 180));
             double nz = xzLen * Math.cos(getYaw() * (Math.PI / 180));
-            Location location = NMSHandler.getEntityHelper().rayTrace(this, new Vector(nx, -ny, nz), range);
-            if (location != null) {
-                return new LocationTag(location).getAttribute(attribute.fulfill(1));
+            try {
+                NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                Location location = NMSHandler.getEntityHelper().rayTrace(this, new Vector(nx, -ny, nz), range);
+                if (location != null) {
+                    return new LocationTag(location).getAttribute(attribute.fulfill(1));
+                }
+                else {
+                    return null;
+                }
             }
-            else {
-                return null;
+            finally {
+                NMSHandler.getChunkHelper().restoreServerThread(getWorld());
             }
         }
 
@@ -1367,9 +1407,15 @@ else if (getBlockForTag(attribute).getType() == Material.FLOWER_POT) {
                 range = 100;
             }
             ListTag list = new ListTag();
-            BlockIterator iterator = new BlockIterator(this, 0, range);
-            while (iterator.hasNext()) {
-                list.add(new LocationTag(iterator.next().getLocation()).identify());
+            try {
+                NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                BlockIterator iterator = new BlockIterator(this, 0, range);
+                while (iterator.hasNext()) {
+                    list.add(new LocationTag(iterator.next().getLocation()).identify());
+                }
+            }
+            finally {
+                NMSHandler.getChunkHelper().restoreServerThread(getWorld());
             }
             return list.getAttribute(attribute.fulfill(1));
         }
@@ -1384,8 +1430,14 @@ else if (getBlockForTag(attribute).getType() == Material.FLOWER_POT) {
         if (attribute.startsWith("line_of_sight") && attribute.hasContext(1)) {
             LocationTag location = LocationTag.valueOf(attribute.getContext(1));
             if (location != null) {
-                return new ElementTag(NMSHandler.getEntityHelper().canTrace(getWorld(), toVector(), location.toVector()))
-                        .getAttribute(attribute.fulfill(1));
+                try {
+                    NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                    return new ElementTag(NMSHandler.getEntityHelper().canTrace(getWorld(), toVector(), location.toVector()))
+                            .getAttribute(attribute.fulfill(1));
+                }
+                finally {
+                    NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+                }
             }
         }
 
@@ -1717,7 +1769,7 @@ else if (yaw < 315) {
                             if (Utilities.checkLocation(this, tstart.clone().add(x + 0.5, y + 0.5, z + 0.5), radius)) {
                                 if (!materials.isEmpty()) {
                                     for (MaterialTag material : materials) {
-                                        if (material.hasData() && material.getData() != 0) { // TODO: less arbitrary matching
+                                        if (NMSHandler.getVersion().isAtMost(NMSVersion.v1_12) && material.hasData() && material.getData() != 0) {
                                             BlockState bs = new LocationTag(tstart.clone().add(x, y, z)).getBlockStateForTag(attribute);
                                             if (bs != null && material.matchesMaterialData(bs.getData())) {
                                                 found.add(new LocationTag(tstart.clone().add(x, y, z)));
@@ -2471,7 +2523,16 @@ else if (this.getWorldName().equalsIgnoreCase(toLocation.getWorldName())) {
         // Returns whether the block at the location is a liquid.
         // -->
         if (attribute.startsWith("is_liquid")) {
-            return new ElementTag(getBlockForTag(attribute).isLiquid()).getAttribute(attribute.fulfill(1));
+            Block b = getBlockForTag(attribute);
+            if (b != null) {
+                try {
+                    NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                    return new ElementTag(b.isLiquid()).getAttribute(attribute.fulfill(1));
+                }
+                finally {
+                    NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+                }
+            }
         }
 
 
@@ -2484,8 +2545,17 @@ else if (this.getWorldName().equalsIgnoreCase(toLocation.getWorldName())) {
         // -->
         if (attribute.startsWith("light.from_blocks") ||
                 attribute.startsWith("light.blocks")) {
-            return new ElementTag(getBlockForTag(attribute).getLightFromBlocks())
-                    .getAttribute(attribute.fulfill(2));
+            Block b = getBlockForTag(attribute);
+            if (b != null) {
+                try {
+                    NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                    return new ElementTag(getBlockForTag(attribute).getLightFromBlocks())
+                            .getAttribute(attribute.fulfill(2));
+                }
+                finally {
+                    NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+                }
+            }
         }
 
         // <--[tag]
@@ -2497,8 +2567,17 @@ else if (this.getWorldName().equalsIgnoreCase(toLocation.getWorldName())) {
         // -->
         if (attribute.startsWith("light.from_sky") ||
                 attribute.startsWith("light.sky")) {
-            return new ElementTag(getBlockForTag(attribute).getLightFromSky())
-                    .getAttribute(attribute.fulfill(2));
+            Block b = getBlockForTag(attribute);
+            if (b != null) {
+                try {
+                    NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                    return new ElementTag(getBlockForTag(attribute).getLightFromSky())
+                            .getAttribute(attribute.fulfill(2));
+                }
+                finally {
+                    NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+                }
+            }
         }
 
         // <--[tag]
@@ -2508,8 +2587,17 @@ else if (this.getWorldName().equalsIgnoreCase(toLocation.getWorldName())) {
         // Returns the total amount of light on the location.
         // -->
         if (attribute.startsWith("light")) {
-            return new ElementTag(getBlockForTag(attribute).getLightLevel())
-                    .getAttribute(attribute.fulfill(1));
+            Block b = getBlockForTag(attribute);
+            if (b != null) {
+                try {
+                    NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                    return new ElementTag(getBlockForTag(attribute).getLightLevel())
+                            .getAttribute(attribute.fulfill(1));
+                }
+                finally {
+                    NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+                }
+            }
         }
 
         // <--[tag]
@@ -2519,8 +2607,17 @@ else if (this.getWorldName().equalsIgnoreCase(toLocation.getWorldName())) {
         // Returns the current redstone power level of a block.
         // -->
         if (attribute.startsWith("power")) {
-            return new ElementTag(getBlockForTag(attribute).getBlockPower())
-                    .getAttribute(attribute.fulfill(1));
+            Block b = getBlockForTag(attribute);
+            if (b != null) {
+                try {
+                    NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                    return new ElementTag(getBlockForTag(attribute).getBlockPower())
+                            .getAttribute(attribute.fulfill(1));
+                }
+                finally {
+                    NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+                }
+            }
         }
 
         // <--[tag]
diff --git a/plugin/src/main/java/com/denizenscript/denizen/objects/PlayerTag.java b/plugin/src/main/java/com/denizenscript/denizen/objects/PlayerTag.java
index 29f753ee41..c5d0277397 100644
--- a/plugin/src/main/java/com/denizenscript/denizen/objects/PlayerTag.java
+++ b/plugin/src/main/java/com/denizenscript/denizen/objects/PlayerTag.java
@@ -925,47 +925,53 @@ else if (CoreUtilities.toLowerCase(obj.toString()).equals("npc")) {
                 }
             }
 
-            // Find the valid target
-            BlockIterator bi;
             try {
-                bi = new BlockIterator(getPlayerEntity(), range);
-            }
-            catch (IllegalStateException e) {
-                return null;
-            }
-            Block b;
-            Location l;
-            int bx, by, bz;
-            double ex, ey, ez;
-
-            // Loop through player's line of sight
-            while (bi.hasNext()) {
-                b = bi.next();
-                bx = b.getX();
-                by = b.getY();
-                bz = b.getZ();
-
-                if (b.getType().isSolid()) {
-                    // Line of sight is broken
-                    break;
+                NMSHandler.getChunkHelper().changeChunkServerThread(getWorld());
+                // Find the valid target
+                BlockIterator bi;
+                try {
+                    bi = new BlockIterator(getPlayerEntity(), range);
                 }
-                else {
-                    // Check for entities near this block in the line of sight
-                    for (LivingEntity possibleTarget : possibleTargets) {
-                        l = possibleTarget.getLocation();
-                        ex = l.getX();
-                        ey = l.getY();
-                        ez = l.getZ();
-
-                        if ((bx - .50 <= ex && ex <= bx + 1.50) &&
-                                (bz - .50 <= ez && ez <= bz + 1.50) &&
-                                (by - 1 <= ey && ey <= by + 2.5)) {
-                            // Entity is close enough, so return it
-                            return new EntityTag(possibleTarget).getDenizenObject().getAttribute(attribute.fulfill(attribs));
+                catch (IllegalStateException e) {
+                    return null;
+                }
+                Block b;
+                Location l;
+                int bx, by, bz;
+                double ex, ey, ez;
+
+                // Loop through player's line of sight
+                while (bi.hasNext()) {
+                    b = bi.next();
+                    bx = b.getX();
+                    by = b.getY();
+                    bz = b.getZ();
+
+                    if (b.getType().isSolid()) {
+                        // Line of sight is broken
+                        break;
+                    }
+                    else {
+                        // Check for entities near this block in the line of sight
+                        for (LivingEntity possibleTarget : possibleTargets) {
+                            l = possibleTarget.getLocation();
+                            ex = l.getX();
+                            ey = l.getY();
+                            ez = l.getZ();
+
+                            if ((bx - .50 <= ex && ex <= bx + 1.50) &&
+                                    (bz - .50 <= ez && ez <= bz + 1.50) &&
+                                    (by - 1 <= ey && ey <= by + 2.5)) {
+                                // Entity is close enough, so return it
+                                return new EntityTag(possibleTarget).getDenizenObject().getAttribute(attribute.fulfill(attribs));
+                            }
                         }
                     }
                 }
             }
+            finally {
+                NMSHandler.getChunkHelper().restoreServerThread(getWorld());
+            }
             return null;
         }