I was using the BackWPup script that was giving me the “Allowed memory size of 67108864 bytes exhausted” error.
I fixed the issue by doing the following. I followed the instructions on the following page to determine in which way I am using php:
https://my.bluehost.com/cgi/help/551
For me this was the “PHP Single php.ini” method.
Then I followed the following instructions (with the changes detailed below): https://my.bluehost.com/cgi/help/557
The corrections that I made were as follows:
1. Placed the php.ini in the “public_html/” folder, not the “wp-includes/” folder.
2. I used 96M as 64M was my current settings.
3. I did not edit wp-settings.php as it appears to read the settings from wp-config.php
4. I ran wp-config.php and tried to edit it and saw that it contained the line:
define(‘WP_MEMORY_LIMIT’, ’96M’);
(Maybe running wp-config.php was not necessary, I don’t know).
Hope this helps.