Narrator script adds smilref attributes to poem/title element, which cause a validation failure (because the z3986/2005/ DTD does not permit smilref attributes on poem/title elements).
The input file which generate this validation failure is attached.
z3986/2005/ DTB created from OU course unit
Logged In: YES
user_id=1234214
Originator: NO
This is due to a bug in the DTBook 2005-1 and 2005-2 DTD. A Narrator specific input validation rule has been added to the SVN that disallows the title element from being used. The 'hd' element could be used as a workaround in the poem/title case.