[Resolved] Upgrade from 4.2.1

Hi there.

I am not sure if WP will break; I don't think it should but please do create a full website backup first so that you can have a safety net no matter what happens.

And yes, you would have to manually download the major versions, then install and activate them, then disable them, one by one.

I hope that you will find this information helpful.

Hi there, and welcome back.

I'm happy to hear that you were able to make good progress on this.

I recommend that you enable the WordPress debug feature and recreate the issue. This will help you determine if you're receiving a specific error message instead of the general "fatal error" message.

By doing this, you can check for any PHP errors that might be occurring.

Here’s how to enable debugging:

1. Edit the `wp-config.php` file in your WordPress directory.
2. Add the following lines:

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', false );
define( 'WP_DEBUG_DISPLAY', true );

Once you’ve made these changes, please reproduce the issue again.

After that, check if you see any additional information. You might get a more detailed error message.

Then, if you have more information, you can try to see if you can find any existing tickets with that exact error together with a resolution from our colleagues, and if you can't find any, please open a new ticket for this specific issue so that we can properly focus on one issue per ticket.

Per our Support Policy, we can handle only one issue per ticket.

Continuing with one issue per ticket helps supporters focus on one issue at once and enables other users to find solutions to their questions faster.

Thank you very much for your understanding and cooperation.