--- poormanscron.module.1.21.2.1	Mon Aug 11 15:04:18 2008
+++ poormanscron.module	Mon Aug 11 15:06:16 2008
@@ -44,6 +44,9 @@ function poormanscron_exit() {
     // we don't get a chance to restore them below.
     $saved_messages = drupal_set_message();
 
+    // Ensure that common.inc and all modules are loaded.
+    drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
+
     // Invoke the cron hooks of all enabled modules.
     $message = NULL;
     if (drupal_cron_run()) {