fatal search error in D7

From my site when i click on search and add a key word in key word search I get a DB error in red on the site. The system sends me, the admin, a db error email. Anyone else getting this ? I have been getting this for months now I know why. Here is the top of the email:

Query:

SELECT COUNT(*) FROM `bx_ads_main`  inner JOIN `bx_ads_category_subs` ON `bx_ads_category_subs`.`ID`=`bx_ads_main`.`IDClassifiedsSubs` inner JOIN `bx_ads_category` ON `bx_ads_category`.`ID`=`bx_ads_category_subs`.`IDClassified` inner JOIN `Profiles` ON `Profiles`.`ID`=`bx_ads_main`.`IDProfile` WHERE 1 AND `bx_ads_main`.`Status` ='active' AND MATCH(`bx_ads_main`.`Subject`, `bx_ads_main`.`Message`, `bx_ads_main`.`Tags`, `bx_ads_main`.`City`) AGAINST ('I') AND UNIX_TIMESTAMP() - `bx_ads_main`.`LifeTime`*24*60*60 < `bx_ads_main`.`DateTime` 

Mysql error: Can't find FULLTEXT index matching the column list

Found error in the file '/home/maddxwx/public_html/inc/classes/BxDolSearch.php' at line 514.
Called 'db_value' function with erroneous argument #0.


Debug backtrace:

Array
(
    [1] => Array
        (
            [file] => /home/maddxwx/public_html/inc/classes/BxDolDb.php
            [line] => 236
            [function] => error
            [class] => BxDolDb
            [type] => ->
            [object] => BxDolDb Object
                (
                    [error_checking] => 1
                    [host] => localhost
                    [port] => 
               

so one one else is geetting these errors from key word or other searches? I just got like 3 more emails like the one above as some one was searching for a group

After writing to the support team i got this following statement. Funny thing is it states what the issue seems like but no solution? hmmmmm help anyone?

Hello!

It's very strange. Seems ur Dolphin has changes from standard version because Spy module wasn't inserted to the "search by keyword" system. At our boonex.us site ur query searchKeyword.php?csrf_token=8SJtmAKCJDHGq%3DFEhhzR&keyword=mic&search=Search doesn't have negative effect.