[Logikos]

As supected, $folderid was empty and not defined. vBulletin 3.5.0 no longer uses INT .
This:

PHP Code:

$vbulletin->input->clean_array_gpc($_REQUEST, array('folderid' => INT)); 


Should Be:

PHP Code:

$vbulletin->input->clean_array_gpc($_REQUEST, array('folderid' => TYPE_INT)); 


But for some reason that was not working, i'm not going to lose sleep over why that isn't working as it should so I just replaced it with

PHP Code:

$folderid = $_REQUEST['folderid']; 


Does the job for now.