I'm developing a Patron Self Registration system for our Virtua installation and I have run into a problem. Virtua stores patron records in a pseudo-MARC format. This means that records can be loaded with the vload.exe which is also used for loading bib/holding/ item MARC records aswell. Only, I seem to have a bug in my MARC file generation and I can't get any decent verbose information as to where the bug may be. Are there any MARC File validation tools about? I'm running OS X but have access to XP and a variety of Linux/UNIX boxes too. -- Dan Field <[log in to unmask]> Ffôn/Tel. +44 1970 632 582 Datblygwr Systemau Systems Developer Llyfrgell Genedlaethol Cymru National Library of Wales