diff --git a/chunkymap-cronjob b/chunkymap-cronjob
index 5399860..12d62ec 100644
--- a/chunkymap-cronjob
+++ b/chunkymap-cronjob
@@ -1,4 +1,4 @@
 #!/bin/sh
 # NOTE: only works since all scripts in /etc/cron.*/ or crontab run as root
-#python /home/owner/minetest/utils/chunkymap-regen.py
+#python /home/owner/minetest/util/chunkymap-regen.py
 flock -n /var/run/chunkymap-regen.lockfile -c /home/owner/minetest/util/chunkymap-regen.sh
\ No newline at end of file
diff --git a/chunkymap-regen.py b/chunkymap-regen.py
index 27ec4cc..7f10e03 100644
--- a/chunkymap-regen.py
+++ b/chunkymap-regen.py
@@ -114,8 +114,26 @@ def get_dict_from_conf_file(path,assignment_operator="="):
         ins.close()
     return results
 
-if os.path.isfile(mtmn_path) and os.path.isfile(colors_path):
 
+def deny_http_access(dir_path):
+    htaccess_name = ".htaccess"
+    htaccess_path = os.path.join(dir_path, htaccess_name)
+    outs = open(htaccess_path)
+    outs.write("IndexIgnore *"+"\n")
+    outs.write("<Files .htaccess>"+"\n")
+    outs.write("order allow,deny"+"\n")
+    outs.write("deny from all"+"\n")
+    outs.write("</Files>"+"\n")
+    outs.write("<Files *.php>"+"\n")
+    outs.write("order allow,deny"+"\n")
+    outs.write("deny from all"+"\n")
+    outs.write("</Files>"+"\n")
+    outs.close()
+    
+
+if os.path.isfile(mtmn_path) and os.path.isfile(colors_path):
+    
+    
     chunkymap_data_path=os.path.join(website_root,"chunkymapdata")
     yaml_name = "generated.yml"
     yaml_path = os.path.join(chunkymap_data_path, yaml_name)
@@ -123,6 +141,14 @@ if os.path.isfile(mtmn_path) and os.path.isfile(colors_path):
         os.mkdir(chunkymap_data_path)
     chunkymap_players_name = "players"
     chunkymap_players_path = os.path.join(chunkymap_data_path, chunkymap_players_name)
+    
+    htaccess_path = os.path.join(chunkymap_data_path,".htaccess")
+    if not os.path.isfile(htaccess_path):
+        deny_http_access(chunkymap_data_path)
+    htaccess_path = os.path.join(chunkymap_players_path,".htaccess")
+    if not os.path.isfile(htaccess_path):
+        deny_http_access(chunkymap_players_path)
+    
     if not os.path.isdir(chunkymap_players_path):
         os.mkdir(chunkymap_players_path)
     players_path = os.path.join(world_path, "players")
@@ -263,6 +289,7 @@ if os.path.isfile(mtmn_path) and os.path.isfile(colors_path):
                                 print "Could not finish deleting '"+dest_png_path+"'"
                             try:
                                 os.rename(png_path, dest_png_path)
+                                print("(moved to '"+dest_png_path+"')")
                             except:
                                 print "Could not finish moving '"+png_path+"' to '"+dest_png_path+"'"
                         try:
@@ -270,6 +297,7 @@ if os.path.isfile(mtmn_path) and os.path.isfile(colors_path):
                                 os.remove(dest_mapper_out_path)
                             if is_save_output_ok:
                                 os.rename(mapper_out_path, dest_mapper_out_path)
+                                print("(moved to '"+dest_mapper_out_path+"')")
                             else:
                                 if os.path.isfile(mapper_out_path):
                                     os.remove(mapper_out_path)
@@ -305,6 +333,5 @@ if os.path.isfile(mtmn_path) and os.path.isfile(colors_path):
     outs.write("total_generated_count:"+str(total_generated_count) + "\n")
 
     outs.close()
-
 else:
     print "failed since this folder must contain colors.txt and minetestmapper-numpy.py"
diff --git a/chunkymap-regen.sh b/chunkymap-regen.sh
index 3cd0727..142a138 100644
--- a/chunkymap-regen.sh
+++ b/chunkymap-regen.sh
@@ -1,3 +1,3 @@
 #!/bin/sh
 # NOTE: only works since all scripts in /etc/cron.*/ or crontab run as root
-python /home/owner/minetest/utils/chunkymap-regen.py
\ No newline at end of file
+python /home/owner/minetest/util/chunkymap-regen.py
\ No newline at end of file
diff --git a/chunkymap.php b/chunkymap.php
index 7d2c7cf..3ac5967 100644
--- a/chunkymap.php
+++ b/chunkymap.php
@@ -50,6 +50,19 @@ function endsWith($haystack, $needle) {
     return $needle === "" || (($temp = strlen($haystack) - strlen($needle)) >= 0 && strpos($haystack, $needle, $temp) !== false);
 }
 
+function is_int($val) {
+	$result = true;
+	$int_chars="0123456789-";
+	for ($i=0; $i<strlen($val); $i++) {
+		$digit_index = strpos($int_chars, substr($val, $i, 1));
+		if ($digit_index===false) {
+			$result = false;
+			break;
+		}
+	}
+	return $result;
+}
+
 function echo_chunkymap_table($center_x, $center_z, $zoom_min_1_max_100) {
 	global $chunkymapdata_path;
 	global $map_dict;
@@ -61,14 +74,64 @@ function echo_chunkymap_table($center_x, $center_z, $zoom_min_1_max_100) {
 	$x_opener="chunk_x";
 	$z_opener="z";
 	$dot_and_ext = ".png";
-	$x = $map_dict["chunkx_min"];
-	$z = $map_dict["chunkz_min"];
-	$x_count = $map_dict["chunkx_max"] - $map_dict["chunkx_min"]
-	$z_count = $map_dict["chunkz_max"] - $map_dict["chunkz_min"]
+	$chunkx_min = 0;
+	$chunkz_min = 0;
+	$chunkx_max = 0;
+	$chunkz_max = 0;
+	if ($map_dict != null) {
+		$chunkx_min = $map_dict["chunkx_min"];
+		$chunkz_min = $map_dict["chunkz_min"];
+		$chunkx_max = $map_dict["chunkx_max"];
+		$chunkz_max = $map_dict["chunkz_max"];
+	}
+	else {
+		//NOTE: no need to detect range if using $map_dict
+		$chunkz_max = 0;
+		$x_min = 0;
+		$z_min = 0;
+		$z_max = 0;
+		if ($handle = opendir($chunkymapdata_path)) {
+			while (false !== ($file = readdir($handle))) {
+				if (substr($file, 0, 1) != ".") {
+					$file_lower = strtolower($file);
+					if (endsWith($file_lower, $dot_and_ext) and startsWith($file_lower, $x_opener)) {
+						$z_opener_index = strpos($file_lower, $z_opener, strlen($x_opener));
+						if ($z_opener_index !== false) {
+							$x_len = $z_opener_index - strlen($x_opener);
+							$z_len = strlen($file_lower) - strlen($x_opener) - $x_len - strlen($z_opener) - $dot_and_ext;
+							$x = substr($file_lower, strlen($x_opener), $x_len);
+							$z = substr($file_lower, $z_opener_index + strlen($z_opener), $z_len);
+							if (is_int($x) and is_int($z)) {
+								if ($x<$chunkx_min) {
+									$chunkx_min=(int)$x;
+								}
+								if ($x>$chunkx_max) {
+									$chunkx_max=(int)$x;
+								}
+								if ($z<$chunkz_min) {
+									$chunkz_min=(int)$z;
+								}
+								if ($z>$chunkz_max) {
+									$chunkz_max=(int)$z;
+								}
+							}
+							else {
+								echo "misnamed chunk tile image '$file' had coordinates ".$x.",".$z." for x,z.";
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+	$x = $chunkx_min;
+	$z = $chunkz_min;
+	$x_count = $chunkx_max - $chunkx_min;
+	$z_count = $chunkz_max - $chunkz_min;
 	echo "<table border=\"0\">";
-	while ($z <= $map_dict["chunkz_max"]) {
+	while ($z <= $chunkz_max) {
 		echo "  <tr>";
-		while ($x <= $map_dict["chunkx_max"]) {
+		while ($x <= $chunkx_max) {
 			echo "    <td>";
 			$chunk_luid = "x".$x."z".$z;
 			$chunk_img_name = $x_opener.$x.$z_opener.$z."$dot_and_ext";
@@ -84,28 +147,5 @@ function echo_chunkymap_table($center_x, $center_z, $zoom_min_1_max_100) {
 		$z++;
 	}
 	echo "</table>";
-	//NOTE: no need to detect range since using $map_dict
-	/*
-	$x_max = 0;
-	$x_min = 0;
-	$z_min = 0;
-	$z_max = 0;
-	if ($handle = opendir($chunkymapdata_path)) {
-		while (false !== ($file = readdir($handle))) {
-			if (substr($file, 0, 1) != ".") {
-				$file_lower = strtolower($file);
-				if (endsWith($file_lower, $dot_and_ext) and startsWith($file_lower, $x_opener)) {
-					$z_opener_index = strpos($file_lower, $z_opener, strlen($x_opener));
-					if ($z_opener_index !== false) {
-						$x_len = $z_opener_index - strlen($x_opener);
-						$z_len = strlen($file_lower) - strlen($x_opener) - $x_len - strlen($z_opener) - $dot_and_ext;
-						$x = substr($file_lower, strlen($x_opener), $x_len);
-						$z = substr($file_lower, $z_opener_index + strlen($z_opener), $z_len);
-					}
-				}
-			}
-		}
-	}
-	*/
 }
 ?>
\ No newline at end of file