Hi Keith,

I am sorry for the delay of this reply.

Regarding your issue, it was caused by the recent updates from Pinterest. Please see this post https://wordpress.org/support/topic/pinterest-plugin-error-code

From Pinterest support.....

Becky (Pinterest Help)
Jul 23, 16:13
Hi Mark,
Sorry for the trouble with the hovering Pin It button! Looks like this is our fault, and I’ve reported it to my team so we can look into it further. We’ll work hard to figure out what’s going on and hope to fix it soon.
In the meantime, you should be able to Pin using the Pinterest browser button. You can download the extension here. After installing, you'll see a red P at the top of your browser, just click that whenever you find something on the web you want to save.
Thanks for your continued patience, and let me know if there's anything else we can help you with.
Becky | Community Specialist

For now the temporary solution is to install Pin It browser plugin. Please see http://screencast.com/t/ZKMqtQHZ5Ju
You will then able to pin to your image to Pinterest. Please see http://screencast.com/t/6jtTkx9F

Hope this help and have a nice day!