What happens when you disable all your plugins and activate the default Twenty Fourteen theme? If that fixes the issue re-activate your plugins one by one to see what is causing the problem.
Hi Patrick,
You were very close…
The issue is with the Pixel Happy Theme that I am using.
I deactivated the plugins and switched themes as you suggested. The issue was resolved still when I reactivated all the plugins. Switching back to Pixel Happy Theme resulted in the same issue appearing again, and deactivating plugins had no effect on this.
So, I assume this is an issue where Pixel Happy has not been updated to support the new WordPress 3.8?
Pixel Happy — that’s a Genesis Child Theme, right? It’s no longer being sold on their site but you may want to contact them. I also asked in a Genesis FB group here.
I have tested Pixel Happy on one of my own sites. So far as I can tell, it is working just fine.
Has your version been customised? There is no footer.php included in the theme. There is a file footer-widgeted.php howver, I found I could access and edit it without any problems.
If someone customised the theme for you, then I would suggest you contact them for help. Otherwise, I would suggest you open a support ticket at Studiopress.