Possible Duplicate:
“Warning: Headers already sent” in PHP
I have installed phpBB over IIS 7.5 and the home is showing withouth CSS.
Console on Chrome shows "Resource interpreted as Stylesheet but transferred with MIME type text/html" and IE shows a similar error.
Point is, there is a CSS being dynamically generated with PHP and it's the one with the issue.
The style.php file already has this:
header('Content-type: text/css; charset=UTF-8');
I believe I'm missing something on the App settings on IIS but Google has not been very helpfull.