Problem with zone eana.se

Auditor has some problem reading the zone

Oct 16 14:39:08 fou ods-signerd: Run command: '/usr/local/bin/ods-auditor -c /etc/opendnssec/conf.xml -s /home/rickard/opendnssec/tmp/eana.se.finalized -z eana.se'
Oct 16 14:39:08 fou ods-auditor[601]: SOA differs : from 2003062602 to 1255703947
Oct 16 14:39:08 fou ods-auditor[601]: Auditing eana.se.eana.se zone : NSEC3 SIGNED
Oct 16 14:39:08 fou ods-auditor[601]: Unexpected error auditing files (/home/rickard/opendnssec/unsigned/eana.se and /home/rickard/opendnssec/tmp/eana.se.finalized) : ERR undefined method `length' for nil:NilClass- moving on to next zone. Trace for debugging : /var/lib/gems/1.8/gems/dnsruby-1.39/lib/Dnsruby/name.rb:80:in `initialize' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:730:in `new' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:730:in `lose_last_label' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:746:in `compare_subdomain_of_zone' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:745:in `times' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:745:in `compare_subdomain_of_zone' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:104:in `check_zone' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:84:in `open' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:84:in `check_zone' /usr/local/lib/opendnssec/kasp_auditor/auditor.rb:83:in `open' /usr/local/lib/opendnssec/kasp_auditor/auditor.r
Oct 16 14:39:08 fou ods-signerd: Auditor result: 1