Includes don't work in a sub-domain?

Both my www, as well as test subdomain have the exact same files and structure. I’m a bit confused over the following:

Works:
http://www.oil-testimonials.com/adsense/mainSkyscraper.php

Does not work:
http://test.oil-testimonials.com/adsense/mainSkyscraper.php

Does my subdomain need to be configured differently? I know other includes are working because test.oil-testimonials.com includes a header.php file.

Any suggestions?

Thanks!

Both of those pages look the same to me. Includes should work normally on a subdomain.

Apparently this is a Safari issue. It works fine in IE 8 and Chrome. Why would Safari give me problems in something simple like this? Can someone else try this on their Safari browser? Maybe it’s just one of my browser settings.

Thanks.

Works fine on my Safari, does CTRL-F5 clear the cache?