diff --git a/editview.php b/editview.php
index d7d256d..d17a803 100644
--- a/editview.php
+++ b/editview.php
@@ -59,7 +59,7 @@
         $akeys = preg_grep('/^a/', $keys);   // Filter out only the assigned updating.
 
         $params = array('flashcardid' => $flashcard->id);
-        $deckusers = $DB->get_records('flashcard_card', $params, 'id', 'DISTINCT userid, userid');
+        $deckusers = $DB->get_records('flashcard_card', $params, '', 'DISTINCT userid, userid');
 
         foreach ($qkeys as $qkey) {
 
diff --git a/locallib.php b/locallib.php
index 70127aa..c76e265 100644
--- a/locallib.php
+++ b/locallib.php
@@ -233,7 +233,7 @@ function flashcard_get_card_status(&$flashcard) {
         WHERE
             c.flashcardid = ?
         GROUP BY
-            c.deck
+            c.deck, dd.questiontext
     ";
     $recs = $DB->get_records_sql($sql, array($flashcard->id));
 
@@ -251,7 +251,7 @@ function flashcard_get_card_status(&$flashcard) {
         WHERE
             c.flashcardid = ?
         GROUP BY
-            c.entryid
+            c.entryid, dd.questiontext
     ";
     $accesses = $DB->get_records_sql($sql, array($flashcard->id));
 
diff --git a/playview.php b/playview.php
index 38a0918..ba35491 100644
--- a/playview.php
+++ b/playview.php
@@ -61,7 +61,7 @@
     deck = {$deck} AND
     id $usql
 ";
-
+if (empty($params[0])) $params = array(0=>0); //Avoid error PostgreSQL
 if ($cards = $DB->get_records_select('flashcard_card', $select, $params)) {
     foreach ($cards as $card) {
         $obj = new stdClass();
diff --git a/renderer.php b/renderer.php
index 42c9559..ac059a7 100644
--- a/renderer.php
+++ b/renderer.php
@@ -152,7 +152,7 @@ public function print_deck(&$flashcard, &$cm, $deck) {
      * @param object $status a status object to be filled by the function
      */
     public function print_deck_status(&$flashcard, $userid, &$status) {
-
+        global $OUTPUT;
         $str = '';
 
         $str = '<table width="100%">';