it was not a lock up - it was a repeatable crash to restart triggered by trying to open that epub. so something in the epub code was causing it.
I do still have the file - as original-epub after running the calibre convert which fixed it; but with no clue as to what to look for I don't think it is a worthwhile exercise.
If I copy it to desktop, rename it as epub, and drop it into ADE I get " ADE has stopped working...".
I can open it OK in sigil & run validate with Flight Crew...
no significant errors - just some unreachable stuff e.g.
This OPS document is reachable but not present in the OPF <spine>. "Reachable" means that a reference of some kind that points to this resource exists in the epub.
& some complaint about content.opf version number
I can't post the problem book file due to copyright rules. I suppose I can PM or email it for diagnostics if anyone is interested but it is 4Mb as it contains many pictures
Last edited by cybmole; 02-02-2013 at 01:50 AM.