What do you mean "both modifications"??
http://www.vbulletin.com/forum/forum...ade-php-5-4-17
The blank page likely means you saved something wrong in the php file.
Only try changing this.
Code:
To fix the error with VBSEO you need to:
1) edit /vbseo/includes/functions_vbseo-pre.php
2) on line 181 find: function path($type = '')
3) replace with: public static function path($type = '')
4) save file.
Done