Matt, I updated to the new version.
I distinctly remember getting an InValid message (on account of the capitals) when I was working with the plugin last month, but when I tried after updating, a js-error prevented getting any validation notification at all. So I tried on a test site, and my keys validate. I can only assume that they're also validating on my regular sites now too.
Would any of the changes you made account for my (presumably) solved problem? In any case, thank you. Here's the JS error:
Uncaught TypeError: Cannot read property '0' of undefined