I don't see any other tickets on your account. Could you link me to it please?
Have you upgraded the search plugin to version 4.5? WordPress 4.3 has some changes that does not support most of older plugin versions. If not, please upgrade the search to version 4.5. Here is a documentation link on how to safely do that: http://wpdreams.gitbooks.io/ajax-search-pro-documentation/content/update_notes.html
There is a Problems and Solutions part as well, in case you run into cache and other related common plugin update issues.Best,
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