I have thousands of "duplicate meta tags" and can't find where it's defined…

Google Webmaster Tools is telling me that I have thousands of “duplicate meta descriptions” on my blog. The duplicate meta description is supposedly “Toy Review Daily – New Toy Reviews Every Single Day, 365 Days a Year!”.

I thought that maybe it was just my tagline, but I went to Settings->General and saw that my tagline is presently set to “New Toy Reviews Every Single Day, 366 Days a Year!” since it’s a leap year.

I’m running Yoast SEO with Weaver Twenty-Ten as my theme, but I’ve been through every page of each of those and I CANNOT find anywhere where I’ve set the meta description with “365” in it in order to deactivate it.

Here’s a sample page that has the problem: https://www.toyreviewdaily.com/2011/01/16/toy-review-disney-vinylmation-9-bolt-the-dog/

Partway through the source for that code, I come to this:

<!-- This site is using Weaver 2.2.6 subtheme: Twenty Ten -->
<meta name="description" content=" Toy Review Daily - New Toy Reviews Every Single Day, 365 Days a Year! " />
<meta name="keywords" content="Toy Review Daily blog, Toy Review Daily" />

It appears that Weaver is creating that Meta tag that’s the problem, but I can’t find anywhere in Weaver where you can set a Meta description at all. And for that matter, I don’t see why Weaver would ever set a site-wide Meta tag that would make Google penalize the site it’s being used on in the first place.

Can anyone help me? I really don’t understand what I’ve done wrong or how to fix it…