Dear All I have add the book in cataloging the eroor show in browser this Can't call method "append_fields" on an undefined value at /usr/lib/perl5/site_perl/5.8.8/MARC/File/SAX.pm line 92. at /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi/XML/LibXML/SAX.pm line 64 at /usr/lib/perl5/site_perl/5.8.8/MARC/File/XML.pm line 445 and koha log file show the error this [Sat Jan 30 11:13:40 2010] [error] [client 127.0.0.1] [Sat Jan 30 11:13:40 2010] additem.pl: Can't call method "append_fields" on an undefined value at /usr/lib/perl5/site_perl/5.8.8/MARC/File/SAX.pm line 92., referer: http://localhost:8080/cgi-bin/koha/cataloguing/additem.pl?biblionumber=4&frameworkcode=BKS [Sat Jan 30 11:13:40 2010] [error] [client 127.0.0.1] [Sat Jan 30 11:13:40 2010] additem.pl: at /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi/XML/LibXML/SAX.pm line 64, referer: http://localhost:8080/cgi-bin/koha/cataloguing/additem.pl?biblionumber=4&frameworkcode=BKS [Sat Jan 30 11:13:40 2010] [error] [client 127.0.0.1] [Sat Jan 30 11:13:40 2010] additem.pl: at /usr/lib/perl5/site_perl/5.8.8/MARC/File/XML.pm line 445, referer: http://localhost:8080/cgi-bin/koha/cataloguing/additem.pl?biblionumber=4&frameworkcode=BKS plz help me how to slove this problem Regards vinod kumar (free lancer)