Ok My problem is now sorted!!!

I deleted line 12

require_once('bmz_gif_info.class.php');

and replaced it with the contents of bmz_gif_info.class.php

Everything now works!!!! Including all IH.

So why does the script use require_once('bmz_gif_info.class.php');???

No other scripts in includes/classes call a script.

Ive found nothing which is missing, zoom, compression, and watermarks all work.