mh_ajaxsearch don't work on TYPO3 4.5.6
After upgrading to TYPO3 4.5.6 the mh_ajaxearch don't work anymore.
The spinner.gif isn't show cause the implemented path /img has moved to /res.
Furthermore after typing a search string nothing happens - spinner.gif is shown - but no search results.
The index lists over 8500 words.
After activating debugging in mh_ajaxsearch there is logging an PHP Warning:
Core: Error handler (FE): PHP Warning: utf8_decode() expects parameter 1 to be string, array given in /var/www/vserver/vescon.com/www/typo3conf/ext/mh_ajaxsearch/pi1/class.tx_mhajaxsearch_pi1.php line 350
Has anybody a solution for this problem?