[kh99]

Well, I don't know why you're getting a grey screen. To be honest I don't remember what happens when you press "run now" in the scheduled task manager (which is what I assume you're doing). But I think you do have at least one problem: mysql_fetch_array() returns one row of the results as an array. If your query only selects one column, it's still an array with one index. So instead of calling mysql_fetch_array to get all of the returned values (as it seems you're doing), you need to call mysql_fetch_array() repeated in a loop until it returns NULL (or maybe it returns FALSE, I can't remember). In fact you probably should just use $vbulletin->db->fetch_array(), which just ends up calling mysql_fetch_array().