diff --git a/date_views/includes/date_views_filter_handler_simple.inc b/date_views/includes/date_views_filter_handler_simple.inc
index f10ed0c..c0ffd33 100644
--- a/date_views/includes/date_views_filter_handler_simple.inc
+++ b/date_views/includes/date_views_filter_handler_simple.inc
@@ -62,6 +62,9 @@ class date_views_filter_handler_simple extends views_handler_filter_date {
     $default_date = '';
     if (empty($options)) {
       if ($this->options['is_grouped']) {
+        if ($this->options['group_info']['default_group'] = 'All') {
+          return '';
+        }
         $options = $this->options['group_info']['group_items'][$this->options['group_info']['default_group']]['value'][$prefix . '_group'];
       }
       else {
@@ -112,12 +115,12 @@ class date_views_filter_handler_simple extends views_handler_filter_date {
       if (empty($this->options['exposed'])) {
         return str_replace(' ', 'T', $this->date_default_value($prefix));
       }
-      elseif ($this->options['is_grouped'] && isset($_GET[$this->options['group_info']['identifier']])) {
-        $identifier = $_GET[$this->options['group_info']['identifier']];
+      elseif ($this->options['is_grouped'] && isset($this->view->exposed_raw_input[$this->options['group_info']['identifier']]['value'])) {
+        $identifier = $this->view->exposed_raw_input[$this->options['group_info']['identifier']];
         $options = $this->options['group_info']['group_items'][$identifier]['value'][$prefix . '_group'];
         return str_replace(' ', 'T', $this->date_default_value($prefix, $options));
       }
-      elseif (isset($this->options['expose']['identifier']) && !isset($_GET[$this->options['expose']['identifier']])) {
+      elseif (isset($this->options['expose']['identifier']) && !isset($this->view->exposed_raw_input[$this->options['expose']['identifier']]['value'])) {
         return str_replace(' ', 'T', $this->date_default_value($prefix));
       }
     }
@@ -483,6 +486,10 @@ class date_views_filter_handler_simple extends views_handler_filter_date {
 
     $options = &$form_state['values']['options'];
 
+    if (!isset($options['operator'])) {
+      return;
+    }
+
     if ($options['operator'] == 'between' || $options['operator'] == 'not between') {
       if ($options['value']['min_group']['min_choose_input_type'] == 'relative') {
         if (empty($options['value']['min_group']['default_date'])) {