test pic load

I can load pics like this, as they are hosted externally no problem, its just sending pics to the site that seem to be hanging up.

Took this at Goodwood today........
Nope still cant add the very same Pic above to the My Car section still get.

Fatal error: Call to undefined function: is_valid_resize_extension() in /home/gt40s/public_html/forum/includes/class_carreg.php on line 41

Get the hammer and WD40 out
Just thought I would bump this,

Still cant add pictures to the "My car" section tried a couple of different PC systems today from different locations (IP Addresses)

Any updates?