Make sure that we can start a workflow via a cron job. Fixes bugs #11444 and #10189

docs/changelog/7.x.x.txt

@@ -7,6 +7,8 @@
  - added #10944: Wiki Keyword Page
  - added #10946: Wiki - Hierarchical Keyword Report
  - added #10945: Wiki - Top-level keyword list
+ - fixed #11444: Strange spectre problem
+ - fixed #10189: pbworkflow000000000007 Hanging
 
 7.9.2
  - added: Workflow to extend recurring Calendar events 2 years from the

lib/WebGUI/Operation/Cron.pm

@@ -306,9 +306,13 @@ sub www_runCronJob {
                 }
                 
                 # Run the instance
-                $instance->start( 1 );
-		$task->delete( 1 ) if ( $task->get("runOnce") );
-		return "done";
+        my $error = $instance->start( 1 );
+        if ($error) {
+            $task->delete(1);
+            return "error";
+        }
+        $task->delete( 1 ) if ( $task->get("runOnce") );
+        return "done";
 	}
 	$session->errorHandler->warn("No task ID passed to cron job runner.");
 	return "error";