Just wanted to get back to everyone on this issue i had, turned out was an issue with my old hosting company now on a new host and have it all working fine for me
cheers
It took me 3 hours but I found it :D
In validation_png.php
Find:
$bitmap_font_size = 5;// 1 to 5
Add After:
if (PHP_VERSION >= 4.1) $HTTP_GET_VARS =& $_GET;