Updated changelog.

CHANGELOG.txt

@@ -1,4 +1,7 @@
-1.8:
+1.8.1
+- Fixed NullPointerException.
+
+1.8
 - Updated for Minecraft beta.
 - Blacklist hooks have CHANGED. The new hooks are work better. on-create has
     been replaced with on-place (for block placement) and on-use
@@ -7,7 +10,7 @@
 - Added coordinates to blacklist file logger.
 - Added suffocation damage prevention.
 
-1.7.1:
+1.7.1
 - Updated for v0.2.8.
 
 1.7

src/WorldGuardListener.java

@@ -756,13 +756,15 @@ public class WorldGuardListener extends PluginListener {
      * @return true if you wish to cancel this change
      */
     public boolean onSignChange(Player player, Sign sign) {
-        int id = etc.getServer().getBlockIdAt(sign.getX(),
-                sign.getY(), sign.getZ());
-        Block block = new Block(id, sign.getX(),
-                sign.getY(), sign.getZ());
+        if (blacklist != null) {
+            int id = etc.getServer().getBlockIdAt(sign.getX(),
+                    sign.getY(), sign.getZ());
+            Block block = new Block(id, sign.getX(),
+                    sign.getY(), sign.getZ());
 
-        if (!blacklist.onSilentUse(block, player)) {
-            return true;
+            if (!blacklist.onSilentUse(block, player)) {
+                return true;
+            }
         }
         
         return false;