Index: logging_alerts/emaillog/emaillog.module
===================================================================
--- logging_alerts/emaillog/emaillog.module     (revision 341)
+++ logging_alerts/emaillog/emaillog.module     (revision 907)
@@ -118,7 +118,31 @@
   else {
     $msg = $log_msg['message'];
   }
-
+  if(is_object($log_msg['user'])){
+    if(isset($log_msg['user']->uid)){
+      $uid = $log_msg['user']->uid;
+    }
+    else{
+      $uid = t('No UID');
+      if(function_exists('xdebug_get_function_stack')){
+        // UID should not be empty, but at least 0
+        $msg .= "\n\n ". t('User-Id was not set, debug stack follows') ."\n" . print_r(xdebug_get_function_stack(), true);
+      }
+    }
+    if(isset($log_msg['user']->name)){
+      $name = $log_msg['user']->name;
+    }
+    else{
+      $name = t('No Username');
+    }
+  }
+  else{
+    $uid = t('No UID');
+    $name = t('No Username');
+    if(function_exists('xdebug_get_function_stack')){
+      $msg .= "\n\n ". t('User object was not set, debug stack follows') ."\n" . print_r(xdebug_get_function_stack(), true);
+    }
+  }
   $message = t($message, array(
     '@base_url'      => $base_url,
     '@severity'      => $log_msg['severity'],
@@ -128,8 +152,8 @@
     '@ip'            => $log_msg['ip'],
     '@request_uri'   => $log_msg['request_uri'],
     '@referer_uri'   => $log_msg['referer'],
-    '@uid'           => $log_msg['user']->uid,
-    '@name'          => $log_msg['user']->name,
+    '@uid'           => $uid,
+    '@name'          => $name,
     '@link'          => strip_tags($log_msg['link']),
     '@message'       => strip_tags($msg),
   ));