make sure to backup any files before making changes!
i deleted the class-simplepie.php
when i would refresh the site, it would give another error code.
i went to the file with the error and took out the error code.
had to do this a couple of times, and i’m sure its different on another theme.
still havent gotten the slider to work. its built into the theme i use, and doesnt work with 3.5.