isAllowedBlock() has been rewritten so that it no longer uses item IDs. This was done to fix the issue with burials not working properly, but it likely fixes other issues as well.

src/net/theprogrammersworld/herobrine/Herobrine.java

@@ -256,31 +256,12 @@ public class Herobrine extends JavaPlugin implements Listener {
 		return mat.isSolid();
 	}
 
-	@SuppressWarnings("deprecation")
 	public static boolean isAllowedBlock(final Material mat) {
-		switch (mat.getId()) {
+		if(mat == Material.WATER || mat == Material.STATIONARY_WATER || mat == Material.LAVA || mat == Material.STATIONARY_LAVA
-			case 10: {
+				|| mat == Material.ICE || mat == Material.PACKED_ICE)
-				return false;
+			return false;
-			}
+		else
-			case 11: {
+			return mat.isSolid();
-				return false;
-			}
-			case 8: {
-				return false;
-			}
-			case 9: {
-				return false;
-			}
-			case 174: {
-				return false;
-			}
-			case 79: {
-				return false;
-			}
-			default: {
-				return !mat.isSolid();
-			}
-		}
 	}
 	
 	@EventHandler