I'm trying to install a new theme on one of my WP blogs. Here are the messages I'm getting from WP after clicking the Install button (FYI, in place of the domain name where my blog is, I've inserted "mydomainname" below):
Downloading install package from http://wordpress.org/extend/themes/download/vigilance.1.46.zip.
Unpacking the package.
Could not copy file /public_html/mydomainname/wp-content/upgrade/vigilance.tmp/vigilance/header-banner.php
I would appreciate any advice you can offer.