Déjà Dup segfault when backing up over internet/SSH

Hi Michael,
I have a Déjà Dup backup at a remote location which I have a login to using SSH. I'm trying to backup to that over the internet. Déjà Dup will happily open the SSH (SFTP) folder in Nautilus through the preferences but when I hit Backup, it crashes straight out.

The last part of the strace log is:
15:45:19.050680 brk(0x8d43000) = 0x8d43000
15:45:19.050758 brk(0x8d42000) = 0x8d42000
15:45:19.062240 brk(0x8d63000) = 0x8d63000
15:45:19.080000 brk(0x8d84000) = 0x8d84000
15:45:19.080081 brk(0x8d83000) = 0x8d83000
15:45:19.089591 --- SIGSEGV (Segmentation fault) @ 0 (0) ---
15:45:19.098837 +++ killed by SIGSEGV +++

I'd be grateful if you have any suggestions what's wrong?

Kind regards,
Jonathon