PC-Junky I understand your confusion, you would think that it work in all templates that way. It is strange it does it like that in some styles and not others. I have used this darkness template with my host running in both PHP4 and now PHP5 and have not seen this problem.
PC-Junky, what you need is to configure your server (or .htaccess) to treat php5 as php this should fix your problem. Try adding this to .htaccess in forum root:
Code:
AddType x-mapp-php5 .php