Outlook Instant Search Encountered a Problem

The web application threw an error message and thought for sure it was fixed by in one of the Stored Procedures. So I searched email, but used the wrong search text. I searched for  =, !=, <, <= , >, >= or and this error message: "Instant Search encountered a problem while trying to display search results. Modifying your query may resolve this problem"

I still can't find the email. I must be remembering a different application error. Searching for an error message returned an error message. Very nice