Possibly fixes #335

core/src/main/java/com/boydti/fawe/command/Reload.java

@@ -46,7 +46,9 @@ public class Reload extends FaweCommand {
                         Fawe.debug(elem);
                     }
                 }
-                player.sendMessage("&cSee console.");
+                if (player != null) {
+                    player.sendMessage("&cSee console.");
+                }
                 return true;
             }
             case "debugpaste":

core/src/main/java/com/boydti/fawe/object/changeset/CPUOptimizedChangeSet.java

@@ -87,6 +87,16 @@ public class CPUOptimizedChangeSet extends FaweChangeSet {
         return changes.iterator();
     }
 
+    @Override
+    public boolean isEmpty() {
+        if (changes.size() == 0) {
+            flush();
+            return changes.size() == 0;
+        } else {
+            return false;
+        }
+    }
+
     @Override
     public int size() {
         return changes.size() * 65536; // num chunks * 65536 (guess of 65536 changes per chunk)

core/src/main/java/com/boydti/fawe/object/changeset/FaweChangeSet.java

@@ -170,6 +170,10 @@ public abstract class FaweChangeSet implements ChangeSet {
         }
     }
 
+    public boolean isEmpty() {
+        return size() == 0;
+    }
+
     public void add(int x, int y, int z, int combinedFrom, BaseBlock to) {
         try {
             if (to.hasNbtData()) {

core/src/main/java/com/boydti/fawe/object/changeset/FaweStreamChangeSet.java

@@ -221,6 +221,15 @@ public abstract class FaweStreamChangeSet extends FaweChangeSet {
         return MainUtil.getCompressedOS(os, compression);
     }
 
+    @Override
+    public boolean isEmpty() {
+        if (blockSize > 0) {
+            return false;
+        }
+        flush();
+        return blockSize == 0;
+    }
+
     @Override
     public int size() {
         // Flush so we can accurately get the size

core/src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -449,7 +449,7 @@ public class LocalSession {
             return;
         }
         FaweChangeSet changeSet = (FaweChangeSet) editSession.getChangeSet();
-        if (changeSet.size() == 0) {
+        if (changeSet.isEmpty()) {
             return;
         }
         FawePlayer fp = editSession.getPlayer();

favs/src/main/java/com/thevoxelbox/voxelsniper/Sniper.java

@@ -300,7 +300,7 @@ public class Sniper {
                 if (clickedBlock != null) {
                     targetBlock = clickedBlock;
                     lastBlock = clickedBlock.getRelative(clickedFace);
-                    if (lastBlock == null) {
+                    if (lastBlock == null || targetBlock == null) {
                         getPlayer().sendMessage(ChatColor.RED + "Snipe target block must be visible.");
                         return true;
                     }