diff --git a/README.md b/README.md
index 321685f..7170d94 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
 # attribute
 Arbitrary attribute definition and storage for user associated data.
 
-See detail on: (I hope) https://www.dokuwiki.org/plugin:attribute
+See detail on: https://www.dokuwiki.org/plugin:attribute
diff --git a/helper.php b/helper.php
index 4222038..5addb4b 100644
--- a/helper.php
+++ b/helper.php
@@ -21,7 +21,7 @@ public function __construct() {
         $this->loadConfig();
         // Create the path used for attribute data.
         $path = substr($this->conf['store'], 0, 1) == '/' ? $this->conf['store'] : DOKU_INC . $this->conf['store'];
-        $this->storepath = ($this->conf['store'] === '' || !is_dir($path)) ? null : $path;
+        $this->storepath = ($this->conf['store'] === '' || !io_mkdir_p($path)) ? null : $path;
         // A directory is needed.
         if(is_null($this->storepath)) {
             msg("Attribute: Configuration item 'store' is not set to a writeable directory.", -1);
@@ -395,8 +395,7 @@ public function del($namespace, $attribute, $user = null) {
             $result = false;
         }
 
-        $lock = $namespace . '.' . $user;
-        io_lock($lock);
+        io_unlock($lock);
 
         return $result;
     }
diff --git a/plugin.info.txt b/plugin.info.txt
index 4a3fe42..fed1f97 100644
--- a/plugin.info.txt
+++ b/plugin.info.txt
@@ -4,10 +4,10 @@ author Michael Wilmes
 
 email  mwilmes@avc.edu
 
-date   2015-09-03
+date   2015-09-10
 
 name   attribute plugin
 
 desc   Arbitrary attribute definition and storage for user associated data.
 
-url    None at this time, would like https://www.dokuwiki.org/plugin:attribute
+url    https://www.dokuwiki.org/plugin:attribute