Creating a Cron Job

[KGodel]

Hello all! This is what I have so far. I basically have members "rank up" based on things they do around the community. I want these to be automatic, so I created the following CRON. Below is the code for the cron PHP file called promos.php

http://pastebin.com/kC10i0j1 (Pastebin for your convenience).

I based it off the default user promotions. This is the scheduled task I setup


Varname: promos
Title: User Promotions 2
Description: Automatic user promotions based on achievement points.
Log Phrase: Usergroup: <strong>{1}</strong>{2}; Users: {3}<dfn>* = Primary Usergroup, % = Secondary Usergroup</dfn>
Hour: 23
Active: Yes
Log Entries: No
Filename: ./includes/cron/promos.php
Product: vBulletin

When I tried to run it, I just got a grey screen with "User Promos 2" at the top.

Can someone help me make this work?