IN windows vps using wamp I got this result:
Notice: Undefined index: popup in C:\wamp\www\mirror\index.php on line 303

Notice: Undefined index: renamefiles in C:\wamp\www\mirror\index.php on line 307
Downloading http://s96.hotfile.com/get/6f3f27e62...ROLA.part1.rar ....
Downloading http://s291.hotfile.com/get/6488f62a...ROLA.part2.rar ....
Downloading http://s100.hotfile.com/get/540488b6...ROLA.part3.rar ....
Downloading http://s123.hotfile.com/get/224fa522...ROLA.part4.rar ....
Extracting downloaded files...
permission changed
permission changed
Could not extract. Delete everything in the 'files' folder and re-run the script.