XF 1.5 vb4 to xenforo 1.5.11 import attachments

I tried to use the default importer in xenforo 1.5.11 to import from vb4, and all works ok but the attachments at 51% give-me an blank page so i have done this to resolve.

Edit the file library/config.php and add this:

ini_set('display_errors', true);
ini_set('max_execution_time', 5000);
ini_set('memory_limit', -1);
I have to thanks to Jake Bunce once more for this help, i have read this from here: