Index: date_timezone.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/date/date_timezone/date_timezone.module,v
retrieving revision 1.19
diff -u -p -r1.19 date_timezone.module
--- date_timezone.module	13 Dec 2008 17:55:33 -0000	1.19
+++ date_timezone.module	11 Feb 2009 15:28:32 -0000
@@ -141,7 +141,7 @@ function date_timezone_user_form_after_b
   // Set the value, and make sure it's a legal value.
   $value = $form['timezone']['timezone']['#default_value'];
   $options = $form['timezone']['timezone']['#options'];
-  if (!array_key_exists($value, $options)) {
+  if (is_array($options) && !array_key_exists($value, $options)) {
     //$value = array_pop($options);
     $value = NULL;
   }