A few days ago I changed theme of my wordpress and yesterday, after implementing ComLuv I found out that my RSS feed wasn’t working.
That was the error and I knew it was due to the white space at the beginning, but why was it there? I mean my theme certainly didn’t have it… I still don’t know for sure… Googling it, I discovered some causes but I really don’t know which one did it.
I couldn’t find a solution for my site, I read this tutorial (in Italian) where I need to change my wp-includes/feed-rss2.php file and add:
at the beginning of the file but still nothing, then as it says in that page I download Fix Rss Feeds and when I run it, nothing… but I did get thousand of backup pages (pretty much all of my site just doubled and I had to erase everything…).
Anyway after lots of reading and all of them wrong for my case and a different way of searching (I simply wrote ‘wordpress feed error’ in google instead of the actual error) I found this solution at W3it
So I modified again my feed-rss2.php with this code and the feed came back online.