SRD75 on "An error occurred while updating Yoast SEO: Could not create directory. wordpres"

WordPress 4.5.2
Upgrading Yoast SEO from 3.2.5 to 3.3.1
Affected sites: 2
Server Environment: shared cpanel hosting

An error occurred while updating Yoast SEO: Could not create directory. wordpress-seo/trunk/vendor/yoast/api-libs/google/io

Other websites on the same shared cpanel hosting do not receive this error.

WordPress was installed through Softaculous on all cpanel sites.

https://wordpress.org/plugins/wordpress-seo/

of the 2 affected websites, 1 is network, 1 is not.

On the non-network website, deleting Yoast SEO, and reinstalling it produces this error:

Unpacking the package…
Could not copy file. wordpress-seo/trunk/js/dist/wp-seo-post-scraper-331.js

Trying a 2nd time produces this error:

Unpacking the package…
Could not copy file. wordpress-seo/languages/wordpress-seo-ja.json

On the network site, I receive:

Unpacking the package…
Could not copy file. wordpress-seo/languages/wordpress-seo-fi.mo

I'm uploading the plugin manually, which will resolve the problem, but happy I have to spend time doing this manually. :P