P&LD10 error on .pdf export

[letsgofishing]

I've been working on a 36 page menu (20mb in size) for around 2 weeks and have been exporting as a .pdf for my client to check.
All of a sudden I get an error when exporting - see capture attached.
Have sent the error log to Xara.
Any help - need to get this file to my client.
Many thanks,
Mike