Changed Site URL, can't upgrade WordPress

Hi all,

I had to change my WordPress site URL, but now I can’t seem to upgrade WordPress.

The site seems fine other than being unable to update plugins.

Here’s the message I get:
Downloading update from http://wordpress.org/wordpress-3.6-new-bundled.zip…

Unpacking the update…

Could not copy file.: /home/u651975505/public_html/dbb/wp-content/upgrade/wordpress-3.tmp/wordpress/wp-admin/js/edit-comments.min.js

Installation Failed