Troubles with WordPress 4.7

2016/12/09

WordPress

trouble: cannot log in

  • site down / missing file wp-includes/class-wp-list-util.php
  • Can’t See Backend
    Solution:
    I’ve updated a site from 4.6 to 4.7 and the db_version remained the old one (37965) so you have to change mannually the db_version to 38590
  • error message:
    No Update Required. Your WordPress database is already up-to-date!
    [Resolved] Can’t access Dashboard after update to WP 4.7
    Solution:
    I had cleared all the cache locations that I was aware of, but after digging a bit deeper on my host cPanel, I found several more types of cache that needed to be cleared. Will remember that for next time. So, feeling red in the face, but glad to be back up and running. Thanks!!!
  • [Resolved]Unable to login after 4.7 update
  • Not able to log in as Admin after 4.7 upgrade.
    error message:
    Fatal error: require_once() [function.require]: Failed opening required ‘/home/content/41/12330941/html/lancastltd/media/wp-admin/includes/class-wp-list-table-compat.php’ (include_path=’.:/usr/local/php5_3/lib/php’) in /home/content/41/12330941/html/lancastltd/media/wp-admin/includes/admin.php on line 64
    Solution:
    I contacted my host and they removed the update. They asked me not to update for a few more days until all the bugs get worked out.

trouble: lost plugins and the multisite network dashboard
I just updated to 4.7 and lost the multisite

error message:

Plugins

W3 Total Cache

[Resolved]After upgrade to 4.7 cannot log in to Admin
Solution:
It was W3 Total Cache. I had it removed and upgrade worked perfectly.

wp_mail conflict

Contact Form 7 : After WP 4.7 upgrade error message

SendGrid : [Resolved]SendGrid: wp_mail has been declared — after upgrading to WordPress 4.7
Solution:
It seems like the plugin is working, but there is an issue related to your SendGrid account.

MainWP Child : [Resolved]Issue with SendGrid plugin
Solution:
Fixed in version 3.2.4

JWT Authentication for WP REST API

[Resolved]wordpress 4.7 compatibility
[Resolved]wordpress 4.7 compatibility
trouble: can’t activate
error messages:
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 2097160 bytes) in /opt/bitnami/apps/wordpress/htdocs/wp-includes/plugin.php on line 443.
Solution:
Fixed on the last version

User Access Manager

[Resolved]Incompatible with WordPress 4.7
trouble: can’t activate
error message:
Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 130968 bytes) in /home3/remax3g/public_html/e_tools/wp-includes/class-wp-query.php on line 3238
solution:
Released plugin version 1.2.7.2

[Resolved]Problem with WordPress 4.7 and uam 1.2.7.2
trouble:
all categories are hidden at the backend and the frontend.
solution:
Released plugin version 1.2.7.4

[Resolved]Post categories break (UAM 1.2.7.2, WP v4.6.1)
solution:
Released plugin version 1.2.7.3

FeedWordPress

[Resolved]BROKEN with the WordPress 4.7 update
trouble: errors to appear on every admin page.
error message: FeedWordPressHTTPAuthenticator::set_auth_options() expected to be a reference, value given in /home/xxxxxxx/public_html/wp-includes/class-wp-hook.php on line 300
solution:
Ok, so it’s very likely the wrong answer, but I removed the ampersand before the $handle parameter for FeedWordPressHTTPAuthenticator::set_auth_options() in feedwordpresshttpauthenticator.class.php and the error disappeared (and my feed imports still worked).

Maintenance

trouble: not working
solution:
Our developers solved this issue. In order not to wait for the update, please upload the new version from github:
https://github.com/Fruitfulcode/Maintenance/

Yet Another Related Posts Plugin (YARPP)

trouble: PHP Warning: ksort()
trouble: Disable YARPP on homepage – WordPress 4.7 glitch
error message:
Warning: ksort() expects parameter 1 to be array, object given in /******/plugins/yet-another-related-posts-plugin/classes/YARPP_Cache.php on line 465
solution:
A user make bug fix version.
https://gist.github.com/pcfreak30/3cc7afb94fd1070c9e1c6bc6f9dfc10f