It's been a long time since I last posted, but anyway; :P
My wp-rss.php and wp-rss2.php stopped working after I upgraded to WP 1.5.1. It intially showed a blank page, but after I reinstalled the wp-rss and wp-rss2 from a fresh download, it now shows the following error:
Warning: Cannot modify header information - headers already sent by (output started at /home/little/public_html/wp-rss2.php:1) in /home/little/public_html/wp-blog-header.php on line 145
So I grabbed the wp-blog-header.php from a fresh install and re-uploaded. But I still get the same problems.
I checked the files line by line and deleted any empty lines, but the error STILL shows up.
It used to work when I was using WordPress 1.5.
Anyone please help. Thanks. :)
EDITED: It works now! Thanks to IanD.