[pull] master from mcMMO-Dev:master

Changelog.txt

@@ -1,3 +1,6 @@
+Version 2.2.050
+    Further improved compatibility with Excellent Enchants
+
 Version 2.2.049
     Combat abilities work with spear in off-hand again (see notes)
     Sweet berry bushes now work with Herbalism (thanks dnocturne)

src/main/java/com/gmail/nossr50/listeners/BlockListener.java

@@ -242,11 +242,16 @@ public void onEntityBlockFormEvent(EntityBlockFormEvent event) {
             return;
         }
 
-        BlockState blockState = event.getNewState();
+        final BlockState newState = event.getNewState();
+
+        if (!newState.isPlaced()) {
+            // not backed by a real block
+            return;
+        }
 
         if (ExperienceConfig.getInstance().isSnowExploitPrevented() && BlockUtils.shouldBeWatched(
-                blockState)) {
-            Block block = blockState.getBlock();
+                newState)) {
+            final Block block = newState.getBlock();
 
             if (BlockUtils.isWithinWorldBounds(block)) {
                 BlockUtils.setUnnaturalBlock(block);