Matching Question Issues - Completely not working

I am just not having good luck with this question!!

I have removed my .jpg background image, and made the title background a green I want. So now the question shows all of the lines around the images and the connecting lines. YAY!

But...I have a check my answer button on the page (and keep in mind I've already done a check my answer button earlier in the course) and that's not working at all either. I have it set up as "on click - process question) and I have it set to process this current question, not the ealier one. But when I answer my question then click the button - nothing happens.

I've been working with Lectora for over a year and a half now, and this is the first time that everything's gone wrong with just one question! 

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