itos

Also interested on this. I have the PRO version of the plugin but no option to be found for this.

Thanks, I can confirm this solution worked for me.

I also got this problem in the RSS feed. But I didn’t realize it, first the problem was that the wp-admin page shows a blank page. I have been 2 days trying to fix it and I realize that the problem was some blank space lines in the code in functions.php. Search for any blank line spaces between <?php and ?> and erase them. That should fix the RSS and other problems.

The plugins that causes problems are: RSS Add Images to Post and Adsense Optimizer (3.0). While using WP RSS Images (1.0) doesn′t causes problems and now my feed is completely valid wihout any error or warning. But now I have to look for another solution to Adsense for my posts and homepage. For the widgets I just use the code not plugins.
Hope this helps another person with the same problem.

Update: Deactivating all plugins makes my RSS valid. I will try one by one (have 50 uf!) activating to see which causes the problem in feed. Will post an update when I discover.

Thanks for the help and interest.

– switching to the Twenty Ten theme to rule out any theme-specific problems?
* Did that and still the same errors.

– increasing the memory available to PHP?
* I have it incresed to 256MB the maximum my hosting permits.

I solved the error of “ISO-8859-1” changing from “ISO-8859-1” to “utf-8” in feed-rss2.php file under wp-includes folder.

My blog is in spanish and aparrently one of my problems is with the sign “′” in words. So I rewrote a letter without that symbol that was giving errors and magically it solved most errors.

Still I have this error:
line 1, column 13259: Undefined channel element: div (2 occurrences)
https://www.jefefinal.com/feed/

I will try the other solutions of deactivating plugins.

Many Thanks again.

Thanks, this worked. I finally change in media settings the default from 150px to 140px, now I can have 4 Related Posts Thumbnails in my page. After that I used the Regenerate Thumbnails plugin.