Dear All, i am having a problem while adding new MARC Record through KOHA INTRANET.....after entering record when i press the button "Add Bibliographic Record and go to Items" i get the following error in browser.... [Software error: Tag "" is not a valid tag. at c:/usr/koha228/intranet/modules/C4/Biblio.pm line 1383 For help, please send mail to the webmaster (webmaster@dummy-opac), giving this error message and the time and date of the error.] and when i checked apache log files for intranet error i found the follwing: [Mon Feb 01 12:26:54 2010] [error] [client 192.168.0.69] Premature end of script headers: addbiblio.pl, referer: http://192.168.0.69:8000/cgi-bin/koha/acqui.simple/addbiblio.pl [Mon Feb 01 12:26:54 2010] [error] [client 192.168.0.69] Q2 : select distinct m1.bibid from biblio,biblioitems,marc_ biblio,marc_word as m1,marc_word as m2 where biblio.biblionumber=marc_biblio.biblionumber and biblio.biblionumber=biblioitems.biblionumber and m1.bibid=marc_biblio.bibid and (m1.bibid=m2.bibid) and ((m1.word like 'asdfs' and m1.tagsubfield in ('245a'))and (m2.word like 'sdf' and m2.tagsubfield in('245b'))) order by biblio.title ASC term is asdfs sdf at c:/usr/koha228/intranet/modules/C4/SearchMarc.pm line 274., referer: http://192.168.0.69:8000/cgi-bin/koha/acqui.simple/addbiblio.pl [Mon Feb 01 12:26:54 2010] [error] [client 192.168.0.69] Tag "" is not a valid tag. at c:/usr/koha228/intranet/modules/C4/Biblio.pm line 1383, referer: http://192.168.0.69:8000/cgi-bin/koha/acqui.simple/addbiblio.pl hoping for quick response.......... -- Kind Regards, Sajid Ali DBA/Developer College of Aeronautical Engineering NUST, PAF Academy Risalpur Cell # : +92-321-9324415