Don't compare null BlockStates.

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformManager.java

@@ -106,7 +106,7 @@ public class PlatformManager {
         // Make sure that versions are in sync
         if (firstSeenVersion != null) {
             if (!firstSeenVersion.equals(platform.getVersion())) {
-                logger.warn("Multiple ports of WorldEdit are installed but they report different versions ({0} and {1}). " +
+                logger.warn("Multiple ports of WorldEdit are installed but they report different versions ({} and {}). " +
                                 "If these two versions are truly different, then you may run into unexpected crashes and errors.",
                         new Object[]{ firstSeenVersion, platform.getVersion() });
             }

worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockState.java

@@ -145,6 +145,9 @@ public class BlockState implements BlockStateHolder<BlockState> {
 
     @Override
     public boolean equalsFuzzy(BlockStateHolder<?> o) {
+        if (null == o) {
+            return false;
+        }
         if (this == o) {
             // Added a reference equality check for speediness
             return true;