zabbix server backup issue

Hi Expert,

I've configured zabbix in ubuntu 12.04.Now it's working fine.
now i'm trying to take backup and restore backup in new zabbix machine.i've restored backup in new zabbix system.and when i was logging in browser than i've got below error.

    * Error in query [SELECT DISTINCT t.triggerid,t.value,t.lastchange,t.priority,t.value_flags,t.description,t.error, t.expression,hg.groupid FROM triggers t,functions f,items i,hosts_groups hg WHERE hg.hostid=i.hostid AND f.triggerid=t.triggerid AND f.itemid=i.itemid AND hg.groupid IN ('2','4') AND NOT EXISTS (SELECT NULL FROM functions f,items i,hosts h WHERE t.triggerid=f.triggerid AND f.itemid=i.itemid AND i.hostid=h.hostid AND (i.status<>0 OR h.status<>0)) AND t.status=0 AND t.value='1' AND t.flags IN ('0','4') ORDER BY lastchange DESC,t.lastchange DESC] [Unknown column 't.value_flags' in 'field list']
   
 * Error in query [SELECT e.* FROM events e JOIN (SELECT max(eventid) as lasteventid FROM events e WHERE 1=0 AND e.objectid BETWEEN 000000000000000 AND 099999999999999 AND e.object=0 AND e.value_changed=1 GROUP BY e.objectid) ee ON e.eventid=ee.lasteventid] [Unknown column 'e.value_changed' in 'where clause']

Please suggest,what can we do in this situation.

Thanks & Regards,
xeroxzerox