[expert] Problems starting httpd

[Stephen Boulet]

Here's the error I get when trying to start httpd:

[root@tolstoy /root]#  /usr/sbin/httpd 
Syntax error on line 1 of /etc/httpd/conf/addon-modules/midgardphp3.conf:
Cannot load /usr/lib/apache/midgardphp3.so into server: /usr/lib/libgd.so.1: undefined 
symbol: png_set_dither

Anyone know what causes it?

-- Stephen