Check this out:
http://www.e-kereta.com/v25/showmembers.php
Look at all member list. At the image thumbnail, original link was 'showgallery.php' but, there no such 'showgallery.php' in the original package. So, I modified the pp-inc.php and put 'showcat.php' to make it not 404 errors.
Hope developer will take further action.
TQ