Can't delete invoice entry

[Geert Janssens]

On Thursday 18 September 2014 17:53:31 davinci wrote:
> I posted and paid an invoice and then discovered that it had been paid
> twice. So I unposted it and ended up with a complete mess. I renamed
> the invoice to try to get rid of it and start again, but it is still
> being recorded as a payment in the Accounts receivable (which I can't
> delete).
> What can I do?
> 
What version of GnuCash ?

Geert