diff --git a/src/bukkit/java/com/sk89q/bukkit/util/DynamicPluginCommand.java b/src/bukkit/java/com/sk89q/bukkit/util/DynamicPluginCommand.java
index c48df659c..479681c6b 100644
--- a/src/bukkit/java/com/sk89q/bukkit/util/DynamicPluginCommand.java
+++ b/src/bukkit/java/com/sk89q/bukkit/util/DynamicPluginCommand.java
@@ -30,7 +30,6 @@ import org.bukkit.command.TabCompleter;
 import org.bukkit.plugin.Plugin;
 
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 
 /**
@@ -81,10 +80,10 @@ public class DynamicPluginCommand extends org.bukkit.command.Command implements
 
     @Override
     public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
-        if (owner instanceof TabCompleter) {
+        if (registeredWith instanceof CommandInspector) {
             return ((TabCompleter) owner).onTabComplete(sender, this, alias, args);
         } else {
-            return Collections.emptyList();
+            return super.tabComplete(sender, alias, args);
         }
     }
 
diff --git a/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java b/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java
index 466903332..49b21d797 100644
--- a/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java
+++ b/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java
@@ -241,9 +241,15 @@ public final class CommandManager {
             Throwable t = e.getCause();
             actor.printError("Please report this error: [See console]");
             actor.printRaw(t.getClass().getName() + ": " + t.getMessage());
-            t.printStackTrace();
+            logger.log(Level.SEVERE, "An unexpected error while handling a WorldEdit command", t);
         } catch (CommandException e) {
-            actor.printError(e.getMessage());
+            String message = e.getMessage();
+            if (message != null) {
+                actor.printError(e.getMessage());
+            } else {
+                actor.printError("An unknown error has occurred! Please see console.");
+                logger.log(Level.SEVERE, "An unknown error occurred", e);
+            }
         } finally {
             EditSession editSession = locals.get(EditSession.class);
 
diff --git a/src/main/java/com/sk89q/worldedit/regions/selector/EllipsoidRegionSelector.java b/src/main/java/com/sk89q/worldedit/regions/selector/EllipsoidRegionSelector.java
index 3aed786a1..21a2eee6e 100644
--- a/src/main/java/com/sk89q/worldedit/regions/selector/EllipsoidRegionSelector.java
+++ b/src/main/java/com/sk89q/worldedit/regions/selector/EllipsoidRegionSelector.java
@@ -41,6 +41,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 public class EllipsoidRegionSelector extends com.sk89q.worldedit.regions.EllipsoidRegionSelector implements RegionSelector, CUIRegion {
 
     protected EllipsoidRegion region;
+    protected boolean started = false;
 
     /**
      * Create a new selector.
@@ -113,11 +114,17 @@ public class EllipsoidRegionSelector extends com.sk89q.worldedit.regions.Ellipso
 
         region.setCenter(pos.toBlockVector());
         region.setRadius(new Vector());
+        started = true;
+
         return true;
     }
 
     @Override
     public boolean selectSecondary(Vector pos) {
+        if (!started) {
+            return false;
+        }
+
         final Vector diff = pos.subtract(region.getCenter());
         final Vector minRadius = Vector.getMaximum(diff, diff.multiply(-1.0));
         region.extendRadius(minRadius);
@@ -153,7 +160,7 @@ public class EllipsoidRegionSelector extends com.sk89q.worldedit.regions.Ellipso
 
     @Override
     public boolean isDefined() {
-        return region.getRadius().lengthSq() > 0;
+        return started && region.getRadius().lengthSq() > 0;
     }
 
     @Override
diff --git a/src/main/java/com/sk89q/worldedit/regions/selector/SphereRegionSelector.java b/src/main/java/com/sk89q/worldedit/regions/selector/SphereRegionSelector.java
index f6f043778..002ba7577 100644
--- a/src/main/java/com/sk89q/worldedit/regions/selector/SphereRegionSelector.java
+++ b/src/main/java/com/sk89q/worldedit/regions/selector/SphereRegionSelector.java
@@ -80,6 +80,10 @@ public class SphereRegionSelector extends EllipsoidRegionSelector {
 
     @Override
     public boolean selectSecondary(Vector pos) {
+        if (!started) {
+            return false;
+        }
+
         final double radiusScalar = Math.ceil(pos.distance(region.getCenter()));
         region.setRadius(new Vector(radiusScalar, radiusScalar, radiusScalar));
 
diff --git a/src/main/java/com/sk89q/worldedit/world/snapshot/SnapshotRestore.java b/src/main/java/com/sk89q/worldedit/world/snapshot/SnapshotRestore.java
index 51db687ce..68e93213d 100644
--- a/src/main/java/com/sk89q/worldedit/world/snapshot/SnapshotRestore.java
+++ b/src/main/java/com/sk89q/worldedit/world/snapshot/SnapshotRestore.java
@@ -19,25 +19,25 @@
 
 package com.sk89q.worldedit.world.snapshot;
 
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.LinkedHashMap;
-import java.util.List;
-import java.util.Map;
-
 import com.sk89q.worldedit.BlockVector2D;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.Vector2D;
 import com.sk89q.worldedit.blocks.BaseBlock;
-import com.sk89q.worldedit.world.chunk.Chunk;
-import com.sk89q.worldedit.world.storage.ChunkStore;
-import com.sk89q.worldedit.world.DataException;
-import com.sk89q.worldedit.world.storage.MissingChunkException;
-import com.sk89q.worldedit.world.storage.MissingWorldException;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.world.DataException;
+import com.sk89q.worldedit.world.chunk.Chunk;
+import com.sk89q.worldedit.world.storage.ChunkStore;
+import com.sk89q.worldedit.world.storage.MissingChunkException;
+import com.sk89q.worldedit.world.storage.MissingWorldException;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
 
 /**
  *
@@ -168,7 +168,7 @@ public class SnapshotRestore {
                 for (Vector pos : entry.getValue()) {
                     try {
                         BaseBlock block = chunk.getBlock(pos);
-                        editSession.rawSetBlock(pos, block);
+                        editSession.setBlock(pos, block);
                     } catch (DataException e) {
                         // this is a workaround: just ignore for now
                     }