Thanks for your help, guys. I have raised a ticket with Xara and now await their (non-automated) reply.
For anyone who wants to see the file, I have attached it here. You may be able to open it, but not save it if you alter it in any way.
Edit: I can now no longer open the file, let alone save it. In fact, it now causes XDP7 to close. So, I can't follow up on your suggestion, Bill.
Bob.
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