[Koha] 22_to_30 problem: addbiblio.pl: Wide character in null operation

I've been trying to follow the docs at http://wiki.koha.org/doku.php?id=22_to_30 to upgrade from 2.2.9 to 3.0.0 and I get the Koha interface up in the browser. So far so good... Then trying to add a MARC record I see this in the browser: production mode - trapped fatal error and this error in the log file /var/log/koha/koha-error_log [Wed Jan 21 21:52:28 2009] [error] [client 127.0.1.1] [Wed Jan 21 21:52:28 2009] addbiblio.pl: Wide character in null operation at /usr/local/share/perl/5.8.8/MARC/Charset/Table.pm line 96., referer: http://127.0.1.1:8080/cgi-bin/koha/cataloguing/addbiblio.pl?biblionumber=0&z3950=1&breedingid=1649 Suppose it's some Perl module that is not correct but how do I find out which???