The problem is with this plugin:
https://wordpress.org/plugins/all-in-one-event-calendar/
Deactivate it before Updating. To resolve this problem, or if you run into additional problems with it, use (look through and possibily report there) this Support Forum: https://wordpress.org/support/plugin/all-in-one-event-calendar
The way to tell that this is the problem is the presence of \all-in-one-event-calendar\ in the error messages.
Thread Starter
Simon
(@dancingbear1965)
Thanks jonradio. Whilst I agree deactivating the plug-in should allow me to update, the problem is I can’t even get to the plug-in list page. Is there a way to manuallly deactivate the plug-in?
Simon
There undoubtedly is some way to deactivate a plugin “manually” by making changes to the database, I’ve never tried it and would instead recommend using the documented way of deleting a rogue plugin: deleting its directory.
That requires access to your web site’s file system, either through an FTP client on your computer, or a File Manager on your web host’s Control Panel. Of course, if you are running a web site on your own computer (“LocalHost”), then you can just delete the files within Windows.
Here is the folder to delete: C:\Websites\braintreelions\wp-content\plugins\all-in-one-event-calendar\
Hi Simon –
You can “force deactivate” the plugin two ways:
1. Log in to your server via FTP and navigate to /wp-content/plugins/ and delete the all-in-one-event-calendar folder. When you load the plugins page, WordPress will realize the plugin is missing and deactivate it.
2. If you don’t have FTP access but have database access, you can actually deactivate plugins by editing the “active_plugins” value in the wp_options table. To find it, you can run this SQL command:
SELECT * FROM wp_options WHERE option_name = ‘active_plugins’;
The easiest thing to do is just deactivate all your plugins by running the below SQL query so you can at least get to the plugins page, delete the All-in-One Event Calendar, then bulk reactivate all your plugins that you were using.
UPDATE wp_options SET option_value = ” WHERE option_name = ‘active_plugins’;
Hopefully this is helpful and allows you to get back into your plugins page. Let me know if you have any questions.
Cheers,
– Andy Cook
Leadin
Thread Starter
Simon
(@dancingbear1965)
Thanks guys.
I managed to delete the plug-in folder. This gave me the ability to then run all the updates, inc. WordPress 4.o. I then reinstalled the rouge plug-in without any further issues.
Once again thanks for the help.
Simon