--- /Users/sbourget/Downloads/mrbs/web/config.inc.php	2008-08-05 08:22:40.000000000 -0400
+++ /Users/sbourget/Sites/moodle19/blocks/mrbs/web/config.inc.php	2008-08-17 16:40:45.000000000 -0400
@@ -294,8 +294,9 @@
 
 # Set the language used for emails (choose an available lang.* file).
 # Default is 'en'.
-define ("MAIL_ADMIN_LANG", substr($USER->lang,0,2)); //I think this should be same as the locale based on the Moodle user's langage
-
+if (isset($USER->lang)) {
+    define ("MAIL_ADMIN_LANG", substr($USER->lang,0,2)); //I think this should be same as the locale based on the Moodle user's langage
+}
 # Set the email address of the From field. Default is $mrbs_admin_email
 define ("MAIL_FROM", $cfg_mrbs->mail_from); 
 
@@ -332,7 +333,9 @@
 
 //Set locale - previously in language.php which is has now been removed, may be redundant and unnecessary but just in case
 if (empty($locale)) { //quick and ugly hack to avoid PHP notice
-    $locale=substr($USER->lang,0,2);
+    if (isset($USER->lang)) {
+        $locale=substr($USER->lang,0,2);
+    }
 }
 $windows_locale = "eng";
 
@@ -345,7 +348,9 @@
 # language tokens. This must equate to a lang.* file in MRBS.
 # e.g. use "fr" to use the translations in "lang.fr" as the default
 # translations
-$default_language_tokens = substr($USER->lang,0,2); //this could be either set to use the user default (or the site default)
+if (isset($USER->lang)) {
+    $default_language_tokens = substr($USER->lang,0,2); //this could be either set to use the user default (or the site default)
+}
 // echo $default_language_tokens;
 
 # Set this to 1 to disable the automatic language changing MRBS performs