problema componente y base de datos  

Buenos dias,

En la web totcamping.cat he visto que tenia un error 50o en el panel de administración del componente flexbanner.
Me indicaba:
500 - S'ha produït un error.
Unknown column 'a.linkname' in 'field list' SQL=SELECT a.linkid as linkid, a.linkname AS linkname, a.linkurl as linkurl, a.clientid AS clientid, a.checked_out as checked_out, a.checked_out_time AS checked_out_time, a.state AS state,uc.name AS editor,cl.clientname AS clientname FROM `totca_flexbannerslink` AS a LEFT JOIN totca_users AS uc ON uc.id=a.checked_out LEFT JOIN totca_flexbannersclient AS cl ON cl.clientid = a.clientid WHERE (a.state IN (0, 1)) GROUP BY a.linkid, a.linkname, a.clientid, a.checked_out, a.checked_out_time, a.state, editor ORDER BY a.linkurl asc Unknown column 'a.linkname' in 'field list' SQL=SELECT a.linkid as linkid, a.linkname AS linkname, a.linkurl as linkurl, a.clientid AS clientid, a.checked_out as checked_out, a.checked_out_time AS checked_out_time, a.state AS state,uc.name AS editor,cl.clientname AS clientname FROM `totca_flexbannerslink` AS a LEFT JOIN totca_users AS uc ON uc.id=a.checked_out LEFT JOIN totca_flexbannersclient AS cl ON cl.clientid = a.clientid WHERE (a.state IN (0, 1)) GROUP BY a.linkid, a.linkname, a.clientid, a.checked_out, a.checked_out_time, a.state, editor ORDER BY a.linkurl asc LIMIT 0, 20 Unknown column 'a.linkname' in 'field list' SQL=SELECT a.linkid as linkid, a.linkname AS linkname, a.linkurl as linkurl, a.clientid AS clientid, a.checked_out as checked_out, a.checked_out_time AS checked_out_time, a.state AS state,uc.name AS editor,cl.clientname AS clientname FROM `totca_flexbannerslink` AS a LEFT JOIN totca_users AS uc ON uc.id=a.checked_out LEFT JOIN totca_flexbannersclient AS cl ON cl.clientid = a.clientid WHERE (a.state IN (0, 1)) GROUP BY a.linkid, a.linkname, a.clientid, a.checked_out, a.checked_out_time, a.state, editor ORDER BY a.linkurl asc

He hecho una copia con akeeba y la he instalado en el dominio que tengo para pruebas "caravaning.cat". En ésta he intentado instalar una actualización del componente, no lo instala y en el panel me sale como error:
JInstaller: :Instal·lació: Error SQL Funció de la base de dades fallida amb el número d'error 1060
Duplicate column name 'modified' SQL=ALTER TABLE `totca_flexbanners` ADD `modified` datetime NOT NULL default '0000-00-00 00:00:00';
SQL =
ALTER TABLE `#__flexbanners` ADD `modified` datetime NOT NULL default '0000-00-00 00:00:00';

Podrían indicarme que debería hacer ?

Gracias