can't fetch mails

I just want to test the Module for D7 but i get this error on fetching new mails with my Client.
PDOException: SQLSTATE[HY093]: Invalid parameter number: parameter was not defined: SELECT t.nid FROM {support_ticket} t LEFT JOIN {node} n ON t.nid = n.nid LEFT JOIN {support_states} s ON t.state = s.sid WHERE t.client = :t.client AND n.title = :n.title AND isclosed = :isclosed ORDER BY nid DESC LIMIT 0, 1; Array ( [:t.client] => 1 [:n.title] => test anfrage [:isclosed] => 0 ) in _support_identify_ticket() (Zeile 3466 von /var/www/dafmr/html/sites/all/modules/support/support.module).