Update Issues (update-core.php)

I think its working

Can you please give me your screenshot

https://www.bakerart.org.uk/wp-login.php?redirect_to=http%3A%2F%2Fwww.bakerart.org.uk%2Fwp-admin%2Fupdate-core.php&reauth=1

Sorry a2ztechnologies, I had temporarily reverted back to the previous version installed. This also gets around the issue, but means I can’t use the latest version of WordPress.

I have upgraded again to the latest version (4.2.2) and… the same problem exists. Screenshot viewable at: files.c-harding.com/public/Screen%20Shot%202015-06-06%20at%2011.18.18.png.

The CMS login is working (e.g. can login, make changes), it’s the Updates section which does not load and is inaccessible.

Appreciate any help and ideas as is a strange issues that may stop me permanently upgrading unless I can resolve it.

Also I have found I can not access the Settings within section of WordPress (wp-admin/options-general.php). I get exactly the same error message and the page does not load (see screenshot above).

Is my wp-admin folder corrupted?

Try to replace wp-admin and wp-include folder form new one.

Just tried this a2ztechnologies and still the same issues.

I do still have a full backup of the site (previous version) which did work. Is it worth restoring to the previous version, deactivating all of my plugins and then trying the upgrade?