http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=4305 --- Comment #9 from Robin Sheat <robin@catalyst.net.nz> 2010-10-20 06:44:53 UTC --- (In reply to comment #8)

You're ISBN is an invalid ISBN13.

Yep. It's coming from a not completely clean data source.

Could you try adding after:

return undef unless $isbn;

this line:

return undef unless $isbn->is_valid;

That's pretty similar (but slightly different) to the fix I'm testing out right now. I'll attach the patch in a moment. -- Configure bugmail: http://bugs.koha-community.org/bugzilla3/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug.