I wonder if something went wrong during the update. If reloading the browser didn't fix the problem, please open a new issue at the support site here.

https://github.com/ssborbis/ContextSearch-web-ext/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc

There, I can better help troubleshoot and check for any problems. You can also edit your reply here and I'll try to talk you through some debugging.