Found a bug, I think.

I tried it with the company logo image pulled from our website[1], which happens to have a bunch of text in it. (It's more like a combination logo+wordmark, I guess)

The circle which should contain the uniqueness metric score was blank[2], even though the script claimed to find 145 similar icons (which aren't at all similar!)

[1] The logo file: http://www.sequentec.co.uk/application/files/3714/2375/7226/...

[2] Screenshot: https://drive.google.com/file/d/0B6Wx6pDNYe2_bkVrejFvbFBFSjg...