ZC 1.5.5e on PHP 7. I have just added Ultimate SEO Urls and Colorbox mods. Working on the next I find out that Developers Tools is no longer working. I am now getting an error message at the top of the dev tools admin page "Error: No Configuration Key or Text was entered to search for ... Search was terminated"
No matter what I search for... even searching for "zen-cart" in any of the search fields I get this message.
What's going on here?

Thank you,
John