CoderJosh

Since WP 2.2, widgets are part of WordPress Core, so this plugin isn’t required anymore and causes a conflict. You should remove this plugin.

While it depends on how you will upgrade MySQL, this shouldn’t affect your content if done properly.

As some tables are reported to be okay and some are not, it’s most likely that there’s really a problem with the database, not just with the configuration. The OP should investigate this using phpMyAdmin.

After installing the plugin, you need to log in at wordpress.com, get your API key and use it to configure your plugin.

If you don’t have an account on wordpress.com yet, just register there, it’s free.

No, you don’t need to change anything in this file. But check if you downloaded the most recent version of WordPress and if all the files were unpacked correctly.

How did you (attempt to) install WordPress?

Yes, once WordPress is set up, WordPress core as well as the plugins and themes can be upgraded automatically. You’ll see a notification on your dashboard whenever a component needs to be upgraded, that’s really very comfortable and easy!

Also make sure that you don’t confuse the path in the filesystem with the URL, it seems unlikely that /website/ should be part of the URL…

This means that the web server cannot access /website/wp/wp-admin/theme-editor.php. So if this file exists, check the file permissions and the permissions of the directories above and fix them.

Most likely there isn’t any “wrong” code in wp-settings.php, unless you modified it, of course. ??

But more to the point, you have to make sure that ALL the files that WordPress needs are in place.

Sometimes plugins break when WordPress is upgraded, unfortunately.

What exactly happens when you attempt to upgrade a plugin?

Does your site itself work, without logging in?

You can’t use a WordPress theme without WordPress, if that’s what you mean. So you’d have to install WordPress (“WordPress Core”) first and then you can install the theme within your WordPress site.

It won’t help you on your other server though, you also need it on the server where the include fails according to the error message you’ve posted.

Make sure that directory permissions are 777 instead of 666, if that’s not the case.