Hi 🙂
just to report back – managed to fix it… I did try the fix-rss-feed plugin – didn’t fancy setting permissions for all files to have the white space removed so I decided to try the long and time-consuming approach of manually doing it.
Going through about 250-odd files, main WP files, within wp-admin, and mainly the includes folders – was surprised to find some <?php ?> tag unclosed – and lots of the files had the empty tail end lines…
SO I went through them all – and voila… error fixed – all ok.
I found the plugin useful for pinpointing all files with the space to be deleted – and it took a while but it’s working.
PS: if you want my copy of the WP files, now with white-space removed – feel free to get in touch [prisca AT eyedea.eu] and I’ll email it to you 🙂