Since I was having time out errors running from the browser, I tried running it from the command line and got this error:
<h4>An error occured: </h4> <script> top.location = 'index.php?op=config&errmsg=The+process+has+been+interrupted+%28Time+limit+exceeded+-+9000+-+9001%29' </script>
There is no time limit when running the script on command line, so I'm not sure what the problem is.