Drupal 7 module for profile csv

Problem loading the page for the path mentioned under Profile CSV export menu.Find the attachment of screen shot of the error message.

Notice: Undefined index: data in _profile_csv_format_user() (line 234 of /home/quickstart/websites/example7.dev/sites/all/modules/profile_csv/profile_csv.module).

getting this warning once I export.

Thanks,
Pinky

Few improvements.

Changes:

diff --git a/profile_csv.info b/profile_csv.info
index 5611d8d..5d88e9d 100644
--- a/profile_csv.info
+++ b/profile_csv.info
@@ -2,5 +2,4 @@ name = Profile CSV
 description    = Allows exporting profile data in Comma Separated Values (CSV) format.
 dependencies[] = profile
 core           = 7.x
-files[] = profile_csv.module
 
diff --git a/profile_csv.module b/profile_csv.module
index 8c8878f..68b59cb 100644
--- a/profile_csv.module
+++ b/profile_csv.module
@@ -13,6 +13,9 @@
 define('PROFILE_CSV_ROLE',           'profile_csv_role');
 define('PROFILE_CSV_PERM_DOWNLOAD',  'download profiles');
 
+/**
+ * Implements hook_help().
+ */
 function profile_csv_help($path, $arg) {
   $output = '';
   switch ($path) {
@@ -23,6 +26,9 @@ function profile_csv_help($path, $arg) {
   return $output;
 }
 
+/**
+ * Implements hook_menu().
+ */
 function profile_csv_menu() {
   $items = array();
 
@@ -44,7 +50,9 @@ function profile_csv_menu() {
   return $items;
 }
 
-//menu callback function
+/**
+ * Implements menu callback.
+ */
 function profile_csv_admin_settings() {
  $form['extra'] = array(
     '#type'        => 'markup',
@@ -124,6 +132,7 @@ function profile_csv_admin_settings() {
   $result = db_query("SELECT pf.fid, pf.name, pf.title, pf.category
     FROM {profile_field} pf
     ORDER BY pf.category, pf.weight, pf.title");
+
   foreach ($result as $row) {
     $fld = PROFILE_CSV_PARAM . 'profile_' . $row->fid;
     if (!isset($form[$set][$row->category])) {
@@ -144,7 +153,9 @@ function profile_csv_admin_settings() {
   return system_settings_form($form);
 }
 
-//menu callback function
+/**
+ * Implements menu callback.
+ */
 function profile_csv_page() {
   // This is needed because with sites with 10s of 1,000s of users
   // the setting for PHP (e.g. 96MB or 128MB) is not enough. Instead
@@ -204,7 +215,7 @@ function profile_csv_page() {
  */
 function profile_csv_permission() {
   return array(
-    'PROFILE_CSV_PERM_DOWNLOAD' =>  array(
+    PROFILE_CSV_PERM_DOWNLOAD =>  array(
       'title' => t('Access the csv download'),
     ),
   );
@@ -229,7 +240,7 @@ function _profile_csv_get_profile_fields() {
 }
 
 function _profile_csv_format_user($uid = 0) {
-  $data="";
+  $data = '';
   $user_data = _profile_csv_get_user($uid);
   $profile_data = _profile_csv_get_profile($uid, $user_data['data']);
   unset($user_data['data']);